11.3 Acceleration The basketball constantly changes velocity as it rises and falls.
|
|
|
- Jerome Barker
- 5 years ago
- Views:
Transcription
1 The basketball constantly changes velocity as it rises and falls. Describing changes in velocity, and how fast they occur, is a part of describing motion.
2 What Is Acceleration? How are changes in velocity described? The rate at which velocity changes is called acceleration. Scientists can perform artificial transmutations by bombarding atomic nuclei with high-energy particles such as protons, neutrons, or alpha particles.
3 What Is Acceleration? Changes in Speed In science, acceleration applies to any change in an object s velocity. Acceleration can be caused by positive (increasing) change in speed or by negative (decreasing) change in speed. Deceleration is an acceleration that slows an object s speed.
4 What Is Acceleration? Free fall is the movement of an object toward Earth solely because of gravity. The unit for velocity is meters per second. The unit for acceleration, then, is meters per second per second. This unit is typically written as meters per second squared (m/s 2 ). Objects falling near Earth s surface accelerate downward at a rate of 9.8 m/s 2.
5 What Is Acceleration? Each second an object is in free fall, its velocity increases downward by 9.8 meters per second. The change in the stone s speed is 9.8 m/s 2, the acceleration due to gravity. t = 0 s v = 0 m/s t = 1 s v = 9.8 m/s t = 2 s v = 19.6 m/s t = 3 s v = 29.4 m/s
6 What Is Acceleration? Changes in Direction Acceleration can be the result of a change in direction at constant speed, for example, riding a bicycle around a curve.
7 What Is Acceleration? A horse on the carousel is traveling at a constant speed, but it is accelerating because its direction is constantly changing.
8 What Is Acceleration? Changes in Speed and Direction Sometimes motion is characterized by changes in both speed and direction at the same time. Passengers in a car moving along a winding road experience rapidly changing acceleration. The car may enter a long curve at the same time that it slows. The car is accelerating both because it is changing direction and because its speed is decreasing.
9 What Is Acceleration? A roller coaster produces acceleration due to changes in both speed and direction.
10 What Is Acceleration? Constant Acceleration The velocity of an object moving in a straight line changes at a constant rate when the object is experiencing constant acceleration. Constant acceleration is a steady change in velocity. An airplane s acceleration may be constant during a portion of its takeoff.
11 What Is Acceleration? Constant acceleration during takeoff results in changes to an aircraft s velocity that is in a constant direction.
12 Calculating Acceleration How can you calculate acceleration? You calculate acceleration for straight-line motion by dividing the change in velocity by the total time.
13 Calculating Acceleration Acceleration is the rate at which velocity changes. Vi is the initial velocity, vf is the final velocity, and t is total time.
14 Calculating Acceleration If the velocity increases, the acceleration is positive. If the velocity decreases, the acceleration is negative. If you are coasting downhill on a bicycle, your velocity increases, and your acceleration is positive. If you continue coasting on level ground, your velocity decreases, and your acceleration is negative.
15 Calculating Acceleration Acceleration and velocity are both vector quantities. To determine a change in velocity, subtract one velocity vector from another. If the motion is in a straight line, velocity can be treated as speed, and acceleration is the change in speed divided by the time.
16 Calculating Acceleration Calculating Acceleration A ball rolls down a ramp, starting from rest. After 2 seconds, its velocity is 6 meters per second. What is the acceleration of the ball?
17 Balancing Equations Read and Understand What information are you given?
18 Balancing Equations Read and Understand What information are you given?
19 Balancing Equations Plan and Solve What unknown are you trying to calculate? What formula contains the given quantities and the unknown?
20 Balancing Equations Plan and Solve What unknown are you trying to calculate? What formula contains the given quantities and the unknown?
21 Balancing Equations Plan and Solve Replace each variable with its known value.
22 Balancing Equations Plan and Solve Replace each variable with its known value.
23 Balancing Equations Look Back and Check Is your answer reasonable?
24 Balancing Equations Look Back and Check Is your answer reasonable? Objects in free fall accelerate at a rate of 9.8 m/s 2. The ramp is not very steep. An acceleration of 3 m/s 2 seems reasonable.
25 Describing Ionic Compounds 1. A car traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is its acceleration?
26 Describing Ionic Compounds 1. A car traveling at 10 m/s starts to decelerate steadily. It comes to a complete stop in 20 seconds. What is its acceleration? Answer:
27 Describing Ionic Compounds 2. An airplane travels down a runway for 4.0 seconds with an acceleration of 9.0 m/s 2. What is its change in velocity during this time?
28 Describing Ionic Compounds 2. An airplane travels down a runway for 4.0 seconds with an acceleration of 9.0 m/s 2. What is its change in velocity during this time? Answer: (vf vi) = at = (9.0 m/s2)(4.0 s) = 36 m/s
29 Describing Ionic Compounds 3. A child drops a ball from a bridge. The ball strikes the water under the bridge 2.0 seconds later. What is the velocity of the ball when it strikes the water?
30 Describing Ionic Compounds 3. A child drops a ball from a bridge. The ball strikes the water under the bridge 2.0 seconds later. What is the velocity of the ball when it strikes the water? Answer: vi = 0; vf = at = (9.8 m/s2)(2.0 s) = 20 m/s
31 Describing Ionic Compounds 4. A boy throws a rock straight up into the air. It reaches the highest point of its flight after 2.5 seconds. How fast was the rock going when it left the boy s hand?
32 Describing Ionic Compounds 4. A boy throws a rock straight up into the air. It reaches the highest point of its flight after 2.5 seconds. How fast was the rock going when it left the boy s hand? Answer: v f = 0; v i = at = (9.8 m/s 2 )(2.5 s) = 25 m/s (The minus sign indicates that the velocity is in the direction opposite the acceleration.)
33 Graphs of Accelerated Motion How does a speed-time graph indicate acceleration? The slope of a speed-time graph is acceleration.
34 Graphs of Accelerated Motion You can use a graph to calculate acceleration. Graph speed on the vertical axis and time on the horizontal axis. The slope is change in speed divided by change in time, which is equal to the acceleration.
35 Graphs of Accelerated Motion The skier s acceleration is positive. The acceleration is 4 m/s 2.
36 Graphs of Accelerated Motion Speed-Time Graphs Constant acceleration is represented on a speed time graph by a straight line. The slope of the line is the acceleration. The graph is an example of a linear graph, in which the displayed data form straight-line parts.
37 Graphs of Accelerated Motion Constant negative acceleration decreases speed. On a speed-time graph of a bicycle slowing to a stop, a line sloping downward represents the bicycle decelerating. The change in speed is negative, so the slope of the line is negative.
38 Graphs of Accelerated Motion The biker moves at a constant speed and then slows to a stop.
39 Graphs of Accelerated Motion Distance-Time Graphs Accelerated motion is represented by a curved line on a distance-time graph. In a nonlinear graph, a curve connects the data points that are plotted.
40 Graphs of Accelerated Motion A distance-time graph of accelerated motion is a curve. The data in this graph are for a ball dropped from rest toward the ground.
41 Graphs of Accelerated Motion Compare the slope of the curve during the first second to the slope during the fourth second. An increasing slope means that the speed is increasing.
42 Instantaneous Acceleration What is instantaneous acceleration? Instantaneous acceleration is how fast a velocity is changing at a specific instant.
43 Instantaneous Acceleration Acceleration is rarely constant, and motion is rarely in a straight line. Acceleration involves a change in velocity or direction or both, so the vector of acceleration can point in any direction. The vector s length depends on how fast velocity is changing. For an object that is standing still, the acceleration vector is zero.
44 Assessment Questions 1. What is acceleration? a. the rate at which speed increases b. the time an object s velocity increases c. the rate at which displacement changes d. the rate at which velocity changes
45 Assessment Questions 1. What is acceleration? a. the rate at which speed increases b. the time an object s velocity increases c. the rate at which displacement changes d. the rate at which velocity changes ANS: D
46 Assessment Questions 2. A sports car can accelerate from 0 m/s to 28 m/s in four seconds. What is the acceleration of the car? a. 24 s b. 7 m/s c. 27 m/s d. 27 m/s
47 Assessment Questions 2. A sports car can accelerate from 0 m/s to 28 m/s in four seconds. What is the acceleration of the car? a. 24 s b. 7 m/s c. 27 m/s d. 27 m/s ANS: C
48 Assessment Questions 3. If you were to sketch a displacement-time graph and a speed-time graph for an object experiencing constant acceleration, what would they look like? a. Both graphs would be linear, with the displacement-time graph being steeper. b. Both graphs would be linear, with the speed-time graph being steeper. c. Both graphs would be nonlinear. d. The speed-time graph would be linear; the displacement-time graph would be nonlinear.
49 Assessment Questions 3. If you were to sketch a displacement-time graph and a speed-time graph for an object experiencing constant acceleration, what would they look like? a. Both graphs would be linear, with the displacement-time graph being steeper. b. Both graphs would be linear, with the speed-time graph being steeper. c. Both graphs would be nonlinear. d. The speed-time graph would be linear; the displacement-time graph would be nonlinear. ANS: D
50 Assessment Questions 4. Which of the following is an example of negative acceleration? a. Mike starts riding his bike and uses the pedals to go from 0 km/h to 20 km/h. b. Mike pedals up a hill and gradually slows from 20 km/h to 5 km/h. c. Mike sits on his bike at the top of the hill and rests. d. Mike coasts downhill without pedalling, going from 0 km/h to 15 km/h.
51 Assessment Questions 4. Which of the following is an example of negative acceleration? a. Mike starts riding his bike and uses the pedals to go from 0 km/h to 20 km/h. b. Mike pedals up a hill and gradually slows from 20 km/h to 5 km/h. c. Mike sits on his bike at the top of the hill and rests. d. Mike coasts downhill without pedalling, going from 0 km/h to 15 km/h. ANS: B
52 Assessment Questions 5. The acceleration at a specific point on a distancetime graph is the a. instantaneous acceleration. b. momentary acceleration. c. positive acceleration. d. numerical acceleration.
53 Assessment Questions 5. The acceleration at a specific point on a distancetime graph is the a. instantaneous acceleration. b. momentary acceleration. c. positive acceleration. d. numerical acceleration. ANS: A
54 Assessment Questions 1. If an object experiences a steady velocity change in a straight line, it is undergoing constant acceleration. True False
55 Assessment Questions 1. If an object experiences a steady velocity change in a straight line, it is undergoing constant acceleration. True False ANS: T
11.3 Acceleration. What Is Acceleration? How are changes in velocity described?
What Is Acceleration? How are changes in velocity described? What Is Acceleration? Changes in Speed In science, acceleration applies to Acceleration can be caused by Deceleration is DOK question Predict
11.3 Acceleration. Section Resources
Section 11.3 11.3 1 FOCUS Objectives 11.3.1 Identify changes in motion that produce acceleration. 11.3.2 Describe examples of constant acceleration. 11.3.3 Calculate the acceleration of an object. 11.3.4
Section Distance and displacment
Chapter 11 Motion Section 11.1 Distance and displacment Choosing a Frame of Reference What is needed to describe motion completely? A frame of reference is a system of objects that are not moving with
3 Acceleration. positive and one is negative. When a car changes direction, it is also accelerating. In the figure to the
What You ll Learn how acceleration, time, and velocity are related the different ways an object can accelerate how to calculate acceleration the similarities and differences between straight line motion,
3.3 Acceleration An example of acceleration Definition of acceleration Acceleration Figure 3.16: Steeper hills
3.3 Acceleration Constant speed is easy to understand. However, almost nothing moves with constant speed for long. When the driver steps on the gas pedal, the speed of the car increases. When the driver
Section 11.1 Distance and Displacement (pages )
Name Class Date Section 11.1 Distance and Displacement (pages 328 331) This section defines distance and displacement. Methods of describing motion are presented. Vector addition and subtraction are introduced.
Page 1 / 15. Motion Unit Test. Name: Motion ONLY, no forces. Question 1 (1 point) Examine the graphs below:
Motion Unit Test Motion ONLY, no forces Name: Question 1 (1 point) Examine the graphs below: Which of the four graphs shows the runner with the fastest speed? A. Graph A B. Graph B C. Graph C D. Graph
Motion Along a Straight Line
PHYS 101 Previous Exam Problems CHAPTER Motion Along a Straight Line Position & displacement Average & instantaneous velocity Average & instantaneous acceleration Constant acceleration Free fall Graphical
AP Physics C: Mechanics Ch. 2 Motion. SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Name: Period: Date: AP Physics C: Mechanics Ch. Motion SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. ) Car A is traveling at twice the speed of car
MOTION, DISTANCE, AND DISPLACEMENT Q: What is motion? A: Motion is any change in the position or place of an object. is the study of motion (without
MOTION, DISTANCE, AND DISPLACEMENT Q: What is motion? A: Motion is any change in the position or place of an object. is the study of motion (without considering the cause of the motion). Distance vs. Displacement
Chapter: Motion, Acceleration, and Forces
Table of Contents Chapter: Motion, Acceleration, and Forces Section 1: Describing Motion Section 2: Acceleration Section 3: Motion and Forces 1 Motion Are distance and time important in describing running
1.1 Graphing Motion. IB Physics 11 Kinematics
IB Physics 11 Kinematics 1.1 Graphing Motion Kinematics is the study of motion without reference to forces and masses. We will need to learn some definitions: A Scalar quantity is a measurement that has
Describing Motion. Motion. Are distance and time important in describing running events at the track-and-field meets in the Olympics?
Describing Motion Section 1 Motion Are distance and time important in describing running events at the track-and-field meets in the Olympics? Comstock/JupiterImages Describing Motion Section 1 Motion Distance
Chapter: Motion, Acceleration, and Forces
Table of Contents Chapter: Motion, Acceleration, and Forces Section 1: Describing Motion Section 2: Acceleration Section 3: Motion and Forces 1 Motion Are distance and time important in describing running
Chapter 3. Accelerated Motion
Chapter 3 Accelerated Motion Chapter 3 Accelerated Motion In this chapter you will: Develop descriptions of accelerated motions. Use graphs and equations to solve problems involving moving objects. Describe
Chapter: Motion, Acceleration, and Forces
Chapter 3 Table of Contents Chapter: Motion, Acceleration, and Forces Section 1: Describing Motion Section 2: Acceleration Section 3: Motion and Forces 1 Motion Describing Motion Distance and time are
9/27/12. Chapter: Motion, Acceleration, and Forces. Motion and Position. Motion. Distance. Relative Motion
9/7/ Table of Contents Chapter: Motion,, and Forces Section : Chapter Section : Section : Motion Distance and time are important. In order to win a race, you must cover the distance in the shortest amount
Unit 2 mid term review
Unit 2 mid term review Modified True/False Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence or statement true. 1. Motion
CHAPTER 3 ACCELERATED MOTION
Physics Approximate Timeline Students are expected to keep up with class work when absent. CHAPTER 3 ACCELERATED MOTION Day Plans for the day Assignments for the day 1 3.1 Acceleration o Changing Velocity
Which car/s is/are undergoing an acceleration?
Which car/s is/are undergoing an acceleration? Which car experiences the greatest acceleration? Match a Graph Consider the position-time graphs below. Each one of the 3 lines on the position-time graph
Chapter 2 Motion in One Dimension
Chapter 2 Motion in One Dimension Multiple Choice 1. The position of a particle moving along the x axis is given by 2 x = ( 21+ 22t 6 0. t )m, where t is in s. What is the average velocity during the time
Motion. Slope. Slope. Distance and Displacement
Steepness or slope base (run), height (rise) slope = rise/run slope down (\) : - (rise/run) slope up (/) : + (rise/run) sudden change of slope curved hill - the slope is always changing procedure to find
Physics. Chapter 3 Linear Motion
Physics Chapter 3 Linear Motion Motion is Relative How fast are you moving? We can only speak of how fast in relation to some other thing. Unless otherwise specified, we will assume motion relative to
Motion Chapter 3, Section 1: Distance, Displacement, Speed, Velocity
3 Motion Chapter 3, Section 1: Distance, Displacement, Speed, Velocity Distance An important part of describing the motion of an object is to describe how far it has moved, which is distance. The SI unit
acceleration versus time. LO Determine a particle s change in position by graphical integration on a graph of velocity versus time.
Chapter: Chapter 2 Learning Objectives LO 2.1.0 Solve problems related to position, displacement, and average velocity to solve problems. LO 2.1.1 Identify that if all parts of an object move in the same
Acceleration and Velocity PreTest (Chap 9)
Science 10 Name: Ver: A Date: Acceleration and Velocity PreTest (Chap 9) 1. Which of the following is a unit of acceleration? a. s 2 b. m 2 c. m/s d. m/s/s 2. Data is plotted on a graph with velocity on
Table of Contents. Motion. Section 1 Describing Motion. Section 2 Velocity and Momentum. Section 3 Acceleration
Table of Contents Motion 1 Describing Motion 2 Velocity and Momentum 3 Acceleration 1 Describing Motion Motion Are distance and time important in describing running events at the track-and-field meets
Motion and Speed Note: You will not be able to view the videos from the internet version of this presentation. Copyright laws prevent that option.
Physical Science Chapter 2 Motion and Speed Note: You will not be able to view the videos from the internet version of this presentation. Copyright laws prevent that option. 1 Motion occurs when an object
Physics Review. Do: Page # Which of the following is an appropriate unit for velocity? A. s B. m C. m/s 2 D. km/h
Physics Review Do: Page 413 417 #1 51 1. Which of the following is an appropriate unit for velocity? A. s B. m C. m/s 2 D. km/h Use the following information to answer Question 2. The following distance
Chapter 2 Section 2: Acceleration
Chapter 2 Section 2: Acceleration Motion Review Speed is the rate that an object s distance changes Distance is how far an object has travelled Speed = distance/time Velocity is rate that an object s displacement
Lecture Notes Kinematics Recap 2.4 Acceleration
Lecture Notes 2.5-2.9 Kinematics Recap 2.4 Acceleration Acceleration is the rate at which velocity changes. The SI unit for acceleration is m/s 2 Acceleration is a vector, and thus has both a magnitude
Provincial Exam Review: Motion
Section 8.1 Provincial Exam Review: Motion 1. Identify each of the following quantities as either vector or scalar. (a) 10 kg (b) 20 m [S] (c) 5 hours driving in a car (d) swimming for 100 m [N] (e) 15
Calculating Acceleration
Calculating Acceleration Textbook pages 392 405 Before You Read Section 9. 2 Summary How do you think a velocity-time graph might differ from the position-time graph you learned about in the previous chapter?
QuickCheck. A cart slows down while moving away from the origin. What do the position and velocity graphs look like? Slide 2-65
QuickCheck A cart slows down while moving away from the origin. What do the position and velocity graphs look like? Slide 2-65 QuickCheck A cart speeds up toward the origin. What do the position and velocity
Introduction to 1-D Motion Distance versus Displacement
Introduction to 1-D Motion Distance versus Displacement Kinematics! Kinematics is the branch of mechanics that describes the motion of objects without necessarily discussing what causes the motion.! 1-Dimensional
1. Haiwa walks eastward with a speed of 0.98 m/s. If it takes him 34 min to walk to the store, how far has he walked?
Practice 1A Average velocity and displacement 1. Haiwa walks eastward with a speed of 0.98 m/s. If it takes him 34 min to walk to the store, how far has he walked? v avg = 0.98 m/s east t = 34 min x =?
FORCES AND MOTION UNIT TEST. Multiple Choice: Draw a Circle Completely around the ONE BEST answer.
Name: Date: Period: FORCES AND MOTION UNIT TEST Multiple Choice: Draw a Circle Completely around the ONE BEST answer. 1. A force acting on an object does no work if a. a machine is used to move the object.
(numerical value) In calculating, you will find the total distance traveled. Displacement problems will find the distance from the starting point to the ending point. *Calculate the total amount traveled
Vector and Relative motion discussion/ in class notes. Projectile Motion discussion and launch angle problem. Finish 2 d motion and review for test
AP Physics 1 Unit 2: 2 Dimensional Kinematics Name: Date In Class Homework to completed that evening (before coming to next class period) 9/6 Tue (B) 9/7 Wed (C) 1D Kinematics Test Unit 2 Video 1: Vectors
Chapter Four: Motion
Chapter Four: Motion 4.1 Speed and Velocity 4.2 Graphs of Motion 4.3 Acceleration Section 4.3 Learning Goals Define acceleration. Determine acceleration by mathematical and graphical means. Explain the
5) A stone is thrown straight up. What is its acceleration on the way up? 6) A stone is thrown straight up. What is its acceleration on the way down?
5) A stone is thrown straight up. What is its acceleration on the way up? Answer: 9.8 m/s 2 downward 6) A stone is thrown straight up. What is its acceleration on the way down? Answer: 9.8 m/ s 2 downward
PYP 001 FIRST MAJOR EXAM CODE: TERM: 151 SATURDAY, OCTOBER 17, 2015 PAGE: 1
TERM: 151 SATURDAY, OCTOBER 17, 2015 PAGE: 1 *Read the following (20) questions and choose the right answer: 1 The figure below represents the speed-time graph for the motion of a vehicle during a 7.0-minute
Forces and Motion in One Dimension. Chapter 3
Forces and Motion in One Dimension Chapter 3 Constant velocity on an x-versus-t graph Velocity and Position In general, the average velocity is the slope of the line segment that connects the positions
Chapter 9 Review. Block: Date:
Science 10 Chapter 9 Review Name: Block: Date: 1. A change in velocity occurs when the of an object changes, or its of motion changes, or both. These changes in velocity can either be or. 2. To calculate
Trial 1 Trial 2 Trial 3. From your results, how many seconds would it take the car to travel 1.50 meters? (3 significant digits)
SPEED & ACCELERATION PART I: A DISTANCE-TIME STUDY AT CONSTANT SPEED Speed is composed of two fundamental concepts, namely, distance and time. In this part of the experiment you will take measurements
an expression, in terms of t, for the distance of the particle from O at time [3]
![an expression, in terms of t, for the distance of the particle from O at time [3]](/thumbs/88/114967411.jpg "an expression, in terms of t, for the distance of the particle from O at time [3]")
HORIZON EDUCATION SINGAPORE Additional Mathematics Practice Questions: Kinematics Set 1 1 A particle moves in a straight line so that t seconds after passing through O, its velocity v cm s -1, is given
Comment: Unlike distance, displacement takes into consideration the direction of motion from the point of origin (where the object starts to move).
Chapter 3 Kinematics (A) Distance Vs Displacement 1. Compare distance and displacement in terms of: (a) definition Distance is the total length of travel, irrespective of direction. Displacement is the
Position time graph Type of motion Example
Acceleration Some theme parks have rides in which you are slowly carried up in a seat to the top of a tower, and then suddenly released (Figure 1). On the way down, your arms and hair may fly upward as
An object moves back and forth, as shown in the position-time graph. At which points is the velocity positive?
1 The slope of the tangent on a position-time graph equals the instantaneous velocity 2 The area under the curve on a velocity-time graph equals the: displacement from the original position to its position
Section 2-2: Constant velocity means moving at a steady speed in the same direction
Section 2-2: Constant velocity means moving at a steady speed in the same direction 1. A particle moves from x 1 = 30 cm to x 2 = 40 cm. The displacement of this particle is A. 30 cm B. 40 cm C. 70 cm
Energy, Work & Power Questions
Energy, Work & Power Questions 24. The diagram shows part of a roller coaster ride. In practice, friction and air resistance will have a significant effect on the motion of the vehicle, but you should
1) If the acceleration of an object is negative, the object must be slowing down. A) True B) False Answer: B Var: 1
University Physics, 13e (Young/Freedman) Chapter 2 Motion Along a Straight Line 2.1 Conceptual Questions 1) If the acceleration of an object is negative, the object must be slowing down. A) True B) False
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If the acceleration of an object is negative, the object must be slowing down. A) True B) False
Acceleration review. Regular
Acceleration review Regular Book pg 82 #91 A car is traveling 20m/s when the driver sees a child standing on the road. She takes 0.80s to react, then steps on the brakes and slows at 7.0m/s 2. How far
WEP-Energy. 2. If the speed of a car is doubled, the kinetic energy of the car is 1. quadrupled 2. quartered 3. doubled 4. halved
1. A 1-kilogram rock is dropped from a cliff 90 meters high. After falling 20 meters, the kinetic energy of the rock is approximately 1. 20 J 2. 200 J 3. 700 J 4. 900 J 2. If the speed of a car is doubled,
KINETICS: MOTION ON A STRAIGHT LINE. VELOCITY, ACCELERATION. FREELY FALLING BODIES
014.08.06. KINETICS: MOTION ON A STRAIGHT LINE. VELOCITY, ACCELERATION. FREELY FALLING BODIES www.biofizika.aok.pte.hu Premedical course 04.08.014. Fluids Kinematics Dynamics MECHANICS Velocity and acceleration
Physics 20 Practice Problems for Exam 1 Fall 2014
Physics 20 Practice Problems for Exam 1 Fall 2014 Multiple Choice Short Questions (1 pt ea.) Circle the best answer. 1. An apple falls from a tree and hits the ground 5 meters below. It hits the ground
Department of Natural Sciences Clayton State University. Physics 1111 Quiz 2
Department of Natural Sciences Physics 1111 Quiz September 11, 006 Name SOLUTION A ball is thrown straight up and reaches its maximum height after.00 s. a. What is the acceleration of the ball after it
B) v `2. C) `2v. D) 2v. E) 4v. A) 2p 25. B) p C) 2p. D) 4p. E) 4p 2 25
1. 3. A ball attached to a string is whirled around a horizontal circle of radius r with a tangential velocity v. If the radius is changed to 2r and the magnitude of the centripetal force is doubled the
Kinematic Equations. t! +! 1 2 at 2!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!v f 2 =!v i 2 +!2ad. !!!!!!!!!!!!!!d! =!v i. !!!!!!!!!!!!!!!!
Kinematic Equations Objectives: Students will use kinematic equations to describe and represent the motion of objects by determining: the distance traveled by an object with constant acceleration. the
Particle Motion Notes Position When an object moves, its position is a function of time. For its position function, we will denote the variable s(t).
Particle Motion Notes Position When an object moves, its position is a function of time. For its position function, we will denote the variable s(t). Example 1: For s( t) t t 3, show its position on the
4.1 - Acceleration. What is acceleration?
4.1 - Acceleration How do we describe speeding up or slowing down? What is the difference between slowing down gradually and hitting a brick wall? Both these questions have answers that involve acceleration.
Motion and Forces study Guide
Motion and Forces study Guide Completion Complete each statement. 1. The motion of an object looks different to observers in different. 2. The SI unit for measuring is the meter. 3. The direction and length
AP Physics 1 Work Energy and Power Practice Test Name
AP Physics 1 Work Energy and Power Practice Test Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two objects, one of mass m and the other
Unit 2 - Motion. Chapter 3 - Distance and Speed. Unit 2 - Motion 1 / 76
Unit 2 - Motion Chapter 3 - Distance and Speed Unit 2 - Motion 1 / 76 Precision and Accuracy Precision is a measure of how closely individual measurements agree with one another. Accuracy refers to how
Unit 1 Parent Guide: Kinematics
Unit 1 Parent Guide: Kinematics Kinematics is the study of the motion of objects. Scientists can represent this information in the following ways: written and verbal descriptions, mathematically (with
INTRODUCTION & RECTILINEAR KINEMATICS: CONTINUOUS MOTION
INTRODUCTION & RECTILINEAR KINEMATICS: CONTINUOUS MOTION (Sections 12.1-12.2) Today s Objectives: Students will be able to find the kinematic quantities (position, displacement, velocity, and acceleration)
Potential and Kinetic Energy: Roller Coasters Student Version
Potential and Kinetic Energy: Roller Coasters Student Version Key Concepts: Energy is the ability of a system or object to perform work. It exists in various forms. Potential energy is the energy an object
1. A baseball player throws a ball horizontally. Which statement best describes the ball's motion after it is thrown? [Neglect the effect of
1. A baseball player throws a ball horizontally. Which statement best describes the ball's motion after it is thrown? [Neglect the effect of friction.] A) Its vertical speed remains the same, and its horizontal
April 26, s1206 Lesson 7 sandy 2015.notebook. Acceleration. speeding up slowing down changing direction. Recall
Acceleration speeding up slowing down changing direction Recall 1 The slope of a displacement time graph still represents velocity (tangent technique gives instantaneous velocity). The slope of a velocity
Velocity Time graphs. v = final velocity. u = initial velocity. a = acceleration. s= displacement. t = time
ExamLearn.ie Acceleration Acceleration Acceleration is the rate of change of velocity with respect to time*. The unit of acceleration is the metre per second squared (m/s 2 ) Acceleration =change in velocity
Chapter 2: 2-Dimensional Motion
Chapter 2: 2-Dimensional Motion Chapter 2: 2-Dimensional Motion Chapter 2: 2-Dimensional Motion 2.1 Position 2.2 Distance and Displacement 2.3 Average Speed and Average Velocity 2.4 Instant Speed and Instant
2) A car accelerates from 5.0 m/s to 21 m/s at a rate of 3.0 m/s 2. How far does it travel while accelerating? A) 207 m B) 117 m C) 41 m D) 69 m
Name VECTORS 1) An airplane undergoes the following displacements: First, it flies 59 km in a direction 30 east of north. Next, it flies 58 km due south. Finally, it flies 100 km 30 north of west. Using
A. true. 6. An object is in motion when
1. The SI unit for speed is A. Miles per hour B. meters per second 5. Frictional forces are greatest when both surfaces are rough. A. true B. false 2. The combination of all of the forces acting on an
A B C D. Unit 6 (1-Dimensional Motion) Practice Assessment
Unit 6 (1-Dimensional Motion) Practice Assessment Choose the best answer to the following questions. Indicate the confidence in your answer by writing C (Confident), S (So-so), or G (Guessed) next to the
Physics 20 Acceleration Worksheet
Physics 20 Acceleration Worksheet 1. A racecar reaches the straightaway on the race track going 140km/hr and accelerates at a rate of 3.5m/s 2 for 6.2 seconds. a) what is the car s initial speed in m/s?
Name: Class: 903 Active Physics Winter Break Regents Prep December 2014
In this section use the following equations for velocity and displacement to solve: 1. In a drill during basketball practice, a player runs the length of the 30.meter court and back. The player does this
Unit 1 Test Review Physics Basics, Movement, and Vectors Chapters 2-3
A.P. Physics B Unit 1 Test Review Physics Basics, Movement, and Vectors Chapters - 3 * In studying for your test, make sure to study this review sheet along with your quizzes and homework assignments.
MOTION & FORCES. Observing Motion. Speed and Velocity. Distance vs. Displacement CHAPTERS 11 & 12
Observing Motion CHAPTERS 11 & 12 MOTION & FORCES Everything surrounding us is in motion, but it is relative to other object that remain in place. Motion is observed using a frame of reference. Motion
Displacement, Velocity & Acceleration
Displacement, Velocity & Acceleration Honors/AP Physics Mr. Velazquez Rm. 254 1 Velocity vs. Speed Speed and velocity can both be defined as a change in position or displacement over time. However, speed
Acceleration is the rate of change of velocity in a specific direction. It is a VECTOR quantity has magnitude & direction. Any change in the velocity
Physics Ch. 4 Acceleration is the rate of change of velocity in a specific direction. It is a VECTOR quantity has magnitude & direction. Any change in the velocity (either in magnitude or direction) is
Page 1. Name:
Name: 3834-1 - Page 1 1) If a woman runs 100 meters north and then 70 meters south, her total displacement is A) 170 m south B) 170 m north C) 30 m south D) 30 m north 2) The graph below represents the
Chapter 5 Matter in Motion Focus Notes
Chapter 5 Matter in Motion Focus Notes Section 1 Define the following terms: Motion, Speed, Velocity, and Acceleration Motion: an object s change in position relative to a reference point. Speed: the distance
Potential and Kinetic Energy: Roller Coasters Student Advanced Version
Potential and Kinetic Energy: Roller Coasters Student Advanced Version Key Concepts: Energy is the ability of a system or object to perform work. It exists in various forms. Potential energy is the energy
Chapter 8 : Motion. KEY CONCEPTS [ *rating as per the significance of concept ]
![Chapter 8 : Motion. KEY CONCEPTS [ *rating as per the significance of concept ]](/thumbs/77/76428187.jpg "Chapter 8 : Motion. KEY CONCEPTS [ *rating as per the significance of concept ]")
Chapter 8 : Motion KEY CONCEPTS [ *rating as per the significance of concept ] 1 Motion **** 2 Graphical Representation of Motion *** & Graphs 3 Equation of motion **** 4 Uniform Circular Motion ** 1 Motion
Conceptual Physics 11 th Edition
Conceptual Physics 11 th Edition Chapter 3: LINEAR MOTION This lecture will help you understand: Motion Is Relative Speed : Average and Instantaneous Velocity Acceleration Free Fall Motion Is Relative
Chapter 2: Kinematics
Section 1 Chapter 2: Kinematics To simplify the concept of motion, we will first consider motion that takes place in one direction. To measure motion, you must choose a frame of reference. Frame of reference
Speed and Velocity. v av 5 Dd. Sample Problem 1: Determining Average Speed
1.2 Figure 1 A laser speed device can accurately measure the speed of an oncoming vehicle. average speed (v av ) the total distance travelled divided by the total time taken to travel that distance Speed
Physics 11 Kinematics Review: Vectors, Displacement, Velocity, Acceleration, & Kinematics Equations
Physics 11 Kinematics Review: Vectors, Displacement, Velocity, Acceleration, & Kinematics Equations Review of Kinematics in 1 Dimension: True or False? Mark each statement as T (true) or F (false). If
Describing Mo tion. Speed and Velocity. What is speed?
CHAPTER 1 LESSON 2 Describing Mo tion Speed and Velocity Key Concepts What is speed? How can you use a dis tance-time graph to calculate average speed? What are ways velocity can change? What do you think?
Physics 201 Homework 1
Physics 201 Homework 1 Jan 9, 2013 1. (a) What is the magnitude of the average acceleration of a skier who, starting (a) 1.6 m/s 2 ; (b) 20 meters from rest, reaches a speed of 8.0 m/s when going down
Do Now: 1. Walk in silently. Due Next Class: Derby Car Supplies Due On CA Day: Unit 1 and 2 Review (quiz grade)
Do Now: 1. Walk in silently. Created by M. Kelly OBJECTS IN MOTION STAY IN MOTION! 2. Grab a calculator and any papers for today. 3. Get out your mastery tracker and track your U2 mastery. (also track
Physics Fall Semester Set 2: Chapters 5-9
Chapter 5 and 6 1) Which of the following is considered to be a scalar quantity? a. 10m/s @ 90 0 b. 2 cm south c. 32 nanometers to the left d. 5 liters 2) If an airplane flies in the same direction as
1. (P2.1A) The picture below shows a ball rolling along a table at 1 second time intervals. What is the object s average velocity after 6 seconds?
PHYSICS FINAL EXAM REVIEW FIRST SEMESTER (01/2017) UNIT 1 Motion P2.1 A Calculate the average speed of an object using the change of position and elapsed time. P2.1B Represent the velocities for linear
SECTION 3 - VELOCITY
UNIT 2 MOTION SECTION 3 - VELOCITY How fast do you think we are traveling (orbiting) around the sun? 67,0672 mph How fast do you think we are spinning around our axis as we move around the sun? 1,041.67
Practice Test What two units of measurement are necessary for describing speed?
Practice Test 1 1. What two units of measurement are necessary for describing speed? 2. What kind of speed is registered by an automobile? 3. What is the average speed in kilometers per hour for a horse
LAHS Physics Semester 1 Final Practice Multiple Choice
LAHS Physics Semester 1 Final Practice Multiple Choice The following Multiple Choice problems are practice MC for the final. Some or none of these problems may appear on the real exam. Answers are provided
1 D motion: know your variables, position, displacement, velocity, speed acceleration, average and instantaneous.
General: Typically, there will be multiple choice, short answer, and big problems. Multiple Choice and Short Answer On the multiple choice and short answer, explanations are typically not required (only
Acceleration Worksheet Definitions: velocity: speed in a given direction acceleration: the rate at which the velocity is changing
Name: Period: Date: / / Acceleration Worksheet Definitions: velocity: speed in a given direction acceleration: the rate at which the velocity is changing Acceleration Notes: 1. What are the three things
Chapter Review USING KEY TERMS UNDERSTANDING KEY IDEAS. Skills Worksheet. Multiple Choice
Skills Worksheet Chapter Review USING KEY TERMS Complete each of the following sentences by choosing the correct term from the word bank. mass gravity friction weight speed velocity net force newton 1.