Newton s First Law. Newton s Second Law 9/29/11
|
|
- Marian Booth
- 5 years ago
- Views:
Transcription
1 Newton s First Law Any object remains at constant velocity unless acted upon by a net force. AND In order for an object to accelerate, there must be a net force acting on it. Constant velocity could mean at rest but doesn t necessarily! Force is a vector Net force means adding the vectors (vector components in each direction) Object A is at rest, Object B is moving at constant velocity, which is true: A. There are more forces acting on B than A B. There are more forces acting on A than B C. There are an equal number of forces acting on both D. There are no forces acting on either E. None of the above An object has two forces that do not change magnitude acting on it, which is true: A. The object must be at rest. B. The object must be accelerating. C. The object must be moving at a constant velocity. D. The object might be at rest, accelerating or moving at a constant speed. There is not enough information to tell. How does an object respond to a net force? It depends on the magnitude of the net force Also, it depends on the object itself: all objects resist acceleration (change in velocity), this tendency is called inertia Numerical measure of an object s inertia is its Mass, m (SI units: kg) Mass is not Weight!!! You can be weightless in outer space, but still have the same mass as on Earth Mass is simply a property of an object, always Total mass in the universe does not appear to change: Conservation of Mass law Newton s Second Law If an object has mass, then in order for it to undergo an acceleration there must be a net vector force on it equal to the product of the mass times the acceleration Notice the SI units of Force: kg m/s 2 =N lbs is also a measure of force, but not the SI units Try this: (example 4-4) The net force acting on a student weighing 130 lbs has a magnitude of 25.0 lbs. What is the magnitude of her acceleration? (1 lb = N) 1
2 When an object experiences a non-zero net force, A. The magnitude of its acceleration is equal to its mass B. The vector components of its acceleration are in the same direction as the vector components of the force C. It may have zero acceleration D. It will always have non-zero velocity E. All of the above Physics is a mix of concepts! For example, kinematics and Newton s second law. A 5 kg object starts from rest. A force, F, is acted on the object until the object has moved 4.5 meters, at which point its velocity is 6.0 m/s. What is F? A. 2 N B. 5 N C. 10 N D. 20 N E. None of the above A small boat pushes on a big boat (more massive), the boats move apart but the small boat moves more, which received the greater pushing force? A. The small boat did B. The big boat did C. Both boats received the same pushing force D. Neither received any pushing force Newton s Third Law When two objects interact, the force exerted by object B on object A is equal and opposite to the force exerted by object A on B. Can there be forces without motion? 2
3 During a football game, a defensive linebacker collides head on with the quarterback (quarterback is less massive than linebacker). During the collision, A. The linebacker exerts a greater amount of force on the quarterback than the quarterback on the linebacker. B. The quarterback exerts a greater amount of force on the linebacker than the linebacker on the quarterback. C. Neither exerts a force on the other, though there may be some injuries. D. The linebacker exerts a force on the quarterback but the quarterback does not exert a force on the linebacker. E. The linebacker exerts the same amount of force on the quarterback as the quarterback exerts on the linebacker. You push a snow sled with a child on it on flat snow-covered ground. As you increase your pushing speed, A. Neither you nor the sled exert a force on the other because you are both in motion. B. The amount of force you exert on the sled is the same as the amount of force the sled exerts on you. C. The amount of force you exert on the sled is greater than the amount of force the sled exerts on you. D. The amount of force you exert on the sled is less than the amount of force the sled exerts on you. E. You are the one burning calories, so you exert a force on the sled but the sled doesn t exert a force on you. Types of simple forces Pushing Pulling (tension) Normal force perpendicular to surface Example: your hand exerts a normal force on your pen to keep it from falling Weight (gravitational force), the one common force that doesn t require contact Applying Newton s Laws, mainly the second law Net force on an object will give the object s acceleration Equilibrium (zero acceleration): If an object is at rest or moving with constant velocity, its acceleration is zero, the net force is zero, and the sum of the force components are all zero. Static Equilibrium: special case of equilibrium: zero velocity. Just like in 2-D motion kinematics, Separate forces into directions! Drawing Free Body Diagrams (F.B.D.) 1. Every object of interest in a problem gets its own FBD 2. Draw an arrow for every force acting on ( felt by ) that object 3. All arrows must be adjusted to point away from the object 4. Specify positive x and y direction in diagram 5. Use the FBD to analyze the x and y components of each force (you will need trigonometry!) 6. Apply Newton s Second Law to EACH direction SEPARATELY Examples to follow Example 4-6 A dog pulls the dogsled with a force of 150N at 25 above the horizontal. The mass of the sled-passenger-rope particle is 80kg and there is negligible friction between the sled runners and the ice. Find (a) the acceleration of the sled and (b) the magnitude of the normal force exerted by the surface on the sled. 3
4 Example 4-8 A picture weighing 8.0N is supported by two wires with tensions T 1 and T 2. Find each tension. Example 4-10 Suppose that your mass is m, and you are standing on a scale fastened to the floor of an elevator. The scale measures force in Newtons. What does the scale read when (a) the elevator is rising with upward acceleration of magnitude a. (to help you practice not plugging in numbers yet), (b) the elevator is accelerating downward with magnitude a'. (c) What does the scale read when your mass is 80 kg and the elevator accelerates downward at 8.0m/s 2 Another contact force: Friction When an object is sliding along a surface, there is a certain amount of drag force that resists the motion. The direction of the frictional force always opposes the object s motion. In a free body diagram, the frictional force vector should be drawn opposite the motion direction Friction example problem with a ramp A 5.0 kg block is sliding down an inclined plane that is at an angle of 45 degrees with the horizontal. While the block is moving, the plane provides a frictional force of 10 N. What is the block s acceleration in the direction of motion? Force exerted by a spring When a spring is stretched or compressed from its unstressed length, it exerts a force on an object in contact with it k is the force constant or spring constant, a measure of the spring s stiffness Practice Problem 4-3 A 4.0 kg bunch of bananas is suspended from a spring balance whose force constant is 300 N/m. By how much is the spring stretched? 4
5 Solving two body problems with Newton s Second Law You get multiple equations from the x and y directions, these equations can be solved simultaneously to find unknowns Draw a separate free body diagram for each object Apply Newton s second law to each object for both directions (x and y) Solve the resultant equations for the unknown quantities Example 4-13 In outer space, an astronaut pushes on a box of mass m 1, with force F A1. The box is in direct contact with a second box of mass m 2. a) What is the acceleration of the two boxes? b) What is the magnitude of the force each box exerts on the other? Example 4-9 As your jet plane speeds down the runway on takeoff, you decide to determine its acceleration, so you take out your yo-yo and note that when you suspend it, the string makes an angle of 22.0 with the vertical. (a) What is the acceleration of the plane? (b) If the mass of the yo-yo is 40.0g, what is the tension in the string? 5
Physics Mechanics. Lecture 11 Newton s Laws - part 2
Physics 170 - Mechanics Lecture 11 Newton s Laws - part 2 Newton s Second Law of Motion An object may have several forces acting on it; the acceleration is due to the net force: Newton s Second Law of
More informationDynamics: Forces and Newton s Laws of Motion
Lecture 7 Chapter 5 Physics I Dynamics: Forces and Newton s Laws of Motion Course website: http://faculty.uml.edu/andriy_danylov/teaching/physicsi Today we are going to discuss: Chapter 5: Force, Mass:
More informationDynamics: Forces and Newton s Laws of Motion
Lecture 7 Chapter 5 Dynamics: Forces and Newton s Laws of Motion Course website: http://faculty.uml.edu/andriy_danylov/teaching/physicsi Today we are going to discuss: Chapter 5: Force, Mass: Section 5.1
More informationForces and Newton s Laws Notes
Forces and Newton s Laws Notes Force An action exerted on an object which can change the motion of the object. The SI unit for force is the Newton (N) o N = (kg m)/s 2 o Pound is also a measure of force
More informationPhysics B Newton s Laws AP Review Packet
Force A force is a push or pull on an object. Forces cause an object to accelerate To speed up To slow down To change direction Unit: Newton (SI system) Newton s First Law The Law of Inertia. A body in
More informationChapter Four Holt Physics. Forces and the Laws of Motion
Chapter Four Holt Physics Forces and the Laws of Motion Physics Force and the study of dynamics 1.Forces - a. Force - a push or a pull. It can change the motion of an object; start or stop movement; and,
More informationChapter 4. The Laws of Motion
Chapter 4 The Laws of Motion 1 Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical Mechanics does
More information3. What type of force is the woman applying to cart in the illustration below?
Name: Forces and Motion STUDY GUIDE Directions: Answer the following questions. 1. What is a force? a. A type of energy b. The rate at which an object performs work c. A push or a pull d. An object that
More information3/10/2019. What Is a Force? What Is a Force? Tactics: Drawing Force Vectors
What Is a Force? A force acts on an object. A force requires an agent, something that acts on the object. If you throw a ball, your hand is the agent or cause of the force exerted on the ball. A force
More informationPHYSICS. Chapter 5 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 5 Lecture RANDALL D. KNIGHT Chapter 5 Force and Motion IN THIS CHAPTER, you will learn about the connection between force and motion.
More informationWhat Is a Force? Slide Pearson Education, Inc.
What Is a Force? A force acts on an object. A force requires an agent, something that acts on the object. If you throw a ball, your hand is the agent or cause of the force exerted on the ball. A force
More informationPOGIL: Newton s First Law of Motion and Statics. Part 1: Net Force Model: Read the following carefully and study the diagrams that follow.
POGIL: Newton s First Law of Motion and Statics Name Purpose: To become familiar with the forces acting on an object at rest Part 1: Net Force Model: Read the following carefully and study the diagrams
More informationChapter 5 Force and Motion
Chapter 5 Force and Motion Chapter Goal: To establish a connection between force and motion. Slide 5-2 Chapter 5 Preview Slide 5-3 Chapter 5 Preview Slide 5-4 Chapter 5 Preview Slide 5-5 Chapter 5 Preview
More informationChap. 4: Newton s Law of Motion
Chap. 4: Newton s Law of Motion And Chap.5 Applying Newton s Laws (more examples) Force; Newton s 3 Laws; Mass and Weight Free-body Diagram (1D) Free-body Diagram (1D, 2 Bodies) Free-body Diagram (2D)
More informationLecture Presentation. Chapter 4 Forces and Newton s Laws of Motion. Chapter 4 Forces and Newton s Laws of Motion. Reading Question 4.
Chapter 4 Forces and Newton s Laws of Motion Lecture Presentation Chapter 4 Forces and Newton s Laws of Motion Chapter Goal: To establish a connection between force and motion. Slide 4-2 Chapter 4 Preview
More informationWhat is a Force? Free-Body diagrams. Contact vs. At-a-Distance 11/28/2016. Forces and Newton s Laws of Motion
Forces and Newton s Laws of Motion What is a Force? In generic terms: a force is a push or a pull exerted on an object that could cause one of the following to occur: A linear acceleration of the object
More informationPhysics 101 Lecture 5 Newton`s Laws
Physics 101 Lecture 5 Newton`s Laws Dr. Ali ÖVGÜN EMU Physics Department The Laws of Motion q Newton s first law q Force q Mass q Newton s second law q Newton s third law qfrictional forces q Examples
More informationI. AXN/RXN W.S. In the example below, the action-reaction pair is shown by the arrows (vectors), and the action-reaction described in words.
I. AXN/RXN W.S. In the example below, the action-reaction pair is shown by the arrows (vectors), and the action-reaction described in words. 1. For the remaining situations, discuss with your neighbor
More informationChapter 4. The Laws of Motion
Chapter 4 The Laws of Motion Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical Mechanics does not
More informationReading Quiz. Chapter 5. Physics 111, Concordia College
Reading Quiz Chapter 5 1. The coefficient of static friction is A. smaller than the coefficient of kinetic friction. B. equal to the coefficient of kinetic friction. C. larger than the coefficient of kinetic
More informationForces. 3. The graph given shows the weight of three objects on planet X as a function of their mass. A. 0 N. B. between 0 N and 12 N C.
Name: Date: 1. When a 12-newton horizontal force is applied to a box on a horizontal tabletop, the box remains at rest. The force of static friction acting on the box is 3. The graph given shows the weight
More informationNewton s 3 Laws of Motion
Newton s 3 Laws of Motion 1. If F = 0 No change in motion 2. = ma Change in motion Fnet 3. F = F 1 on 2 2 on 1 Newton s First Law (Law of Inertia) An object will remain at rest or in a constant state of
More informationChapter 5 Newton s Laws of Motion. Copyright 2010 Pearson Education, Inc.
Chapter 5 Newton s Laws of Motion Force and Mass Units of Chapter 5 Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion The Vector Nature of Forces: Forces in Two Dimensions
More informationCHAPTER 4 TEST REVIEW -- Answer Key
AP PHYSICS Name: Period: Date: DEVIL PHYSICS BADDEST CLASS ON CAMPUS 50 Multiple Choice 45 Single Response 5 Multi-Response Free Response 3 Short Free Response 2 Long Free Response AP EXAM CHAPTER TEST
More informationDynamics Newton s Laws Lecture Notes
Pre-AP Dynamics Newton s Laws Lecture Notes Name Targeted Skills for Newton s Laws (Lecture ONLY) 1. Identify and apply Newton s Laws of Motion to a variety of qualitative and quantitative problems. 2.
More informationChapter 4. The Laws of Motion. 1. Force. 2. Newton s Laws. 3. Applications. 4. Friction
Chapter 4 The Laws of Motion 1. Force 2. Newton s Laws 3. Applications 4. Friction 1 Classical Mechanics What is classical Mechanics? Under what conditions can I use it? 2 Sir Isaac Newton 1642 1727 Formulated
More informationQ2. A book whose mass is 2 kg rests on a table. Find the magnitude of the force exerted by the table on the book.
AP Physics 1- Dynamics Practice Problems FACT: Inertia is the tendency of an object to resist a change in state of motion. A change in state of motion means a change in an object s velocity, therefore
More informationPhysics 111 Lecture 4 Newton`s Laws
Physics 111 Lecture 4 Newton`s Laws Dr. Ali ÖVGÜN EMU Physics Department www.aovgun.com he Laws of Motion q Newton s first law q Force q Mass q Newton s second law q Newton s third law q Examples Isaac
More informationPhysics Chapter 4 Newton s Laws of Motion
Physics Chapter 4 Newton s Classical Mechanics Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical
More informationPhys101 Lecture 5 Dynamics: Newton s Laws of Motion
Phys101 Lecture 5 Dynamics: Newton s Laws of Motion Key points: Newton s second law is a vector equation Action and reaction are acting on different objects Free-Body Diagrams Ref: 4-1,2,3,4,5,6,7. Page
More informationvariable Formula S or v SI variable Formula S or v SI 4. How is a Newton defined? What does a Newton equal in pounds?
Newton s Laws 1 1. Define mass variable Formula S or v SI 2. Define inertia, how is inertia related to mass 3. What is a Force? variable Formula S or v SI 4. How is a Newton defined? What does a Newton
More informationPhysics for Scientists and Engineers. Chapter 5 Force and Motion
Physics for Scientists and Engineers Chapter 5 Force and Motion Spring, 2008 Ho Jung Paik Force Forces are what cause any change in the velocity of an object The net force is the vector sum of all the
More informationUNIT 4 NEWTON S THIRD LAW, FORCE DIAGRAMS AND FORCES. Objectives. To understand and be able to apply Newton s Third Law
UNIT 4 NEWTON S THIRD LAW, FORCE DIAGRAMS AND FORCES Objectives To understand and be able to apply Newton s Third Law To be able to determine the object that is exerting a particular force To understand
More informationSteps to Solving Newtons Laws Problems.
Mathematical Analysis With Newtons Laws similar to projectiles (x y) isolation Steps to Solving Newtons Laws Problems. 1) FBD 2) Axis 3) Components 4) Fnet (x) (y) 5) Subs 1 Visual Samples F 4 1) F 3 F
More information4.2. The Normal Force, Apparent Weight and Hooke s Law
4.2. The Normal Force, Apparent Weight and Hooke s Law Weight The weight of an object on the Earth s surface is the gravitational force exerted on it by the Earth. When you weigh yourself, the scale gives
More informationSection /07/2013. PHY131H1F University of Toronto Class 9 Preclass Video by Jason Harlow. Based on Knight 3 rd edition Ch. 5, pgs.
PHY131H1F University of Toronto Class 9 Preclass Video by Jason Harlow Based on Knight 3 rd edition Ch. 5, pgs. 116-133 Section 5.1 A force is a push or a pull What is a force? What is a force? A force
More informationExam 2--PHYS 101--F11--Chapters 4, 5, & 6
ame: Exam 2--PHYS 101--F11--Chapters 4, 5, & 6 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Consider this figure. What is the normal force acting on
More informationConcept of Force Concept Questions
Concept of Force Concept Questions Question 1: You are pushing a wooden crate across the floor at constant speed. You decide to turn the crate on end, reducing by half the surface area in contact with
More informationPHYSICS. Chapter 5 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 5 Lecture RANDALL D. KNIGHT Chapter 5 Force and Motion IN THIS CHAPTER, you will learn about the connection between force and motion.
More informationChapter 4. Dynamics: Newton s Laws of Motion. That is, describing why objects move
Chapter 4 Dynamics: Newton s Laws of Motion That is, describing why objects move orces Newton s 1 st Law Newton s 2 nd Law Newton s 3 rd Law Examples of orces: Weight, Normal orce, Tension, riction ree-body
More informationPhysics 2A Chapter 4: Forces and Newton s Laws of Motion
Physics 2A Chapter 4: Forces and Newton s Laws of Motion There is nothing either good or bad, but thinking makes it so. William Shakespeare It s not what happens to you that determines how far you will
More informationYou may use g = 10 m/s 2, sin 60 = 0.87, and cos 60 = 0.50.
1. A child pulls a 15kg sled containing a 5kg dog along a straight path on a horizontal surface. He exerts a force of a 55N on the sled at an angle of 20º above the horizontal. The coefficient of friction
More informationWritten homework #5 due on Monday Online homework #5 due on Tuesday. Answer keys posted on course web site SPARK grades uploaded Average = 74.
Homework Written homework #5 due on Monday Online homework #5 due on Tuesday Exam 1 Answer keys posted on course web site SPARK grades uploaded Average = 74.3% 1 Chapter 4 Forces and Newton s Laws of Motion
More informationThe Laws of Motion. Newton s first law Force Mass Newton s second law Gravitational Force Newton s third law Examples
The Laws of Motion Newton s first law Force Mass Newton s second law Gravitational Force Newton s third law Examples Gravitational Force Gravitational force is a vector Expressed by Newton s Law of Universal
More informationChoose the best answer for Questions 1-15 below. Mark your answer on your scantron form using a #2 pencil.
Name: ID #: Section #: PART I: MULTIPLE CHOICE QUESTIONS Choose the best answer for Questions 1-15 below. Mark your answer on your scantron form using a #2 pencil. 1. A 55.0-kg box rests on a horizontal
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued 4.9 Static and Kinetic Frictional Forces When an object is in contact with a surface forces can act on the objects. The component of this force acting
More informationReview PHYS114 Chapters 4-7
Review PHYS114 Chapters 4-7 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A 27 kg object is accelerated at a rate of 1.7 m/s 2. What force does
More informationCh 6 Using Newton s Laws. Applications to mass, weight, friction, air resistance, and periodic motion
Ch 6 Using Newton s Laws Applications to mass, weight, friction, air resistance, and periodic motion Newton s 2 nd Law Applied Galileo hypothesized that all objects gain speed at the same rate (have the
More informationGeneral Physics I Spring Forces and Newton s Laws of Motion
General Physics I Spring 2011 Forces and Newton s Laws of Motion 1 Forces and Interactions The central concept in understanding why things move is force. If a tractor pushes or pulls a trailer, the tractor
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued Quiz 3 4.7 The Gravitational Force Newton s Law of Universal Gravitation Every particle in the universe exerts an attractive force on every other
More informationForce. The cause of an acceleration or change in an object s motion. Any kind of a push or pull on an object.
Force The cause of an acceleration or change in an object s motion. Any kind of a push or pull on an object. Forces do not always give rise to motion. Forces can be equal and opposite. Force is a vector
More informationChapter 4 DYNAMICS: FORCE AND NEWTON S LAWS OF MOTION
Chapter 4 DYNAMICS: FORCE AND NEWTON S LAWS OF MOTION Part (a) shows an overhead view of two ice skaters pushing on a third. Forces are vectors and add like other vectors, so the total force on the third
More informationChapter 4. The Laws of Motion
Chapter 4 The Laws of Motion Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical Mechanics does not
More informationForce a push or a pull exerted on some object the cause of an acceleration, or the change in an objects velocity
Chapter 4 Physics Notes Changes in Motion Force a push or a pull exerted on some object the cause of an acceleration, or the change in an objects velocity Forces cause changes in velocity Causes a stationary
More informationNewton s Laws Student Success Sheets (SSS)
--- Newton s Laws unit student success sheets--- Page 1 Newton s Laws Student Success Sheets (SSS) HS-PS2-1 HS-PS2-2 NGSS Civic Memorial High School - Physics Concept # What we will be learning Mandatory
More informationNewton s 3 rd Law. The Nature of Force. Matthew W. Milligan
Newton s 3 rd Law The Nature of Force Forces Dynamics I. Laws of Motion: 1 & 2 - inertia, force, mass - weight II. Law 3 - interaction & nature of force - types of force: normal, friction - air resistance,
More informationChapter 4: Newton s Second Law F = m a. F = m a (4.2)
Lecture 7: Newton s Laws and Their Applications 1 Chapter 4: Newton s Second Law F = m a First Law: The Law of Inertia An object at rest will remain at rest unless, until acted upon by an external force.
More informationChapter 3, Problem 28. Agenda. Forces. Contact and Field Forces. Fundamental Forces. External and Internal Forces 2/6/14
Agenda Today: Homework Quiz, Chapter 4 (Newton s Laws) Thursday: Applying Newton s Laws Start reading Chapter 5 Chapter 3, Problem 28 A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m
More informationChapter 4. The Laws of Motion. Dr. Armen Kocharian
Chapter 4 The Laws of Motion Dr. Armen Kocharian Classical Mechanics Describes the relationship between the motion of objects in our everyday world and the forces acting on them Conditions when Classical
More information2.1 Forces and Free-Body Diagrams
2.1 Forces and Free-Body Diagrams A is a push or a pull. Forces act on objects, and can result in the acceleration, compression, stretching, or twisting of objects. Forces can also act to stabilize an
More information11. (7 points: Choose up to 3 answers) What is the tension,!, in the string? a.! = 0.10 N b.! = 0.21 N c.! = 0.29 N d.! = N e.! = 0.
A harmonic wave propagates horizontally along a taut string of length! = 8.0 m and mass! = 0.23 kg. The vertical displacement of the string along its length is given by!!,! = 0.1!m cos 1.5!!! +!0.8!!,
More informationForces. Isaac Newton stated 3 laws that deal with forces and describe motion. Backbone of Physics
FORCES Forces Isaac Newton stated 3 laws that deal with forces and describe motion. Backbone of Physics Inertia Tendency of an object to remain in the same state of motion. Resists a change in motion.
More informationChapter 4 Newton s Laws
Chapter 4 Newton s Laws Isaac Newton 1642-1727 Some inventions and discoveries: 3 laws of motion Universal law of gravity Calculus Ideas on: Sound Light Thermodynamics Reflecting telescope In this chapter,
More informationNewton s Laws Pre-Test
Newton s Laws Pre-Test 1.) Consider the following two statements and then select the option below that is correct. (i) It is possible for an object move in the absence of forces acting on the object. (ii)
More information1N the force that a 100g bar of chocolate exerts on your hand.
Forces: - - > cause change in motions Newton's first law = law of inertia In absence of a net external force acting upon it, a body will either remain at rest or continue in its rectilinear uniform motion.
More informationIsaac Newton ( ) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity
Isaac Newton (1642-1727) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity Newton s First Law (Law of Inertia) An object will remain at rest or in a constant state of
More informationChapter 4 Force and Motion
Chapter 4 Force and Motion Units of Chapter 4 The Concepts of Force and Net Force Inertia and Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion More on Newton s Laws:
More informationChapter 5 Newton s Laws of Motion. What determines acceleration on objects?
Chapter 5 Newton s Laws of Motion What determines acceleration on objects? 1 Units of Chapter 5 Force and Mass Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion The
More informationNewton s Laws and Free-Body Diagrams General Physics I
Newton s Laws and Free-Body Diagrams In the next few sections, we will be exploring some of the most fundamental laws of our universe, laws that govern the relationship actions and motion. These laws are
More informationDynamics; Newton s Laws of Motion
Dynamics; Newton s Laws of Motion Force A force is any kind of push or pull on an object. An object at rest needs a force to get it moving; a moving object needs a force to change its velocity. The magnitude
More informationUnit 1: Equilibrium and Center of Mass
Unit 1: Equilibrium and Center of Mass FORCES What is a force? Forces are a result of the interaction between two objects. They push things, pull things, keep things together, pull things apart. It s really
More informationPSI AP Physics B Dynamics
PSI AP Physics B Dynamics Multiple-Choice questions 1. After firing a cannon ball, the cannon moves in the opposite direction from the ball. This an example of: A. Newton s First Law B. Newton s Second
More informationChapter 4. Answer Key. Physics Lab Sample Data. Mini Lab Worksheet. Tug-of-War Challenge. b. Since the rocket takes off from the ground, d i
Chapter 3 continued b. Since the rocket takes off from the ground, d i 0.0 m, and at its highest point, v f 0.0 m/s. v f v i a t f (d f d i ) 0 v i a t f d f v i d f a t f (450 m/s) ( 9.80 m/s )(4.6 s)
More informationCircular Motion. A car is traveling around a curve at a steady 45 mph. Is the car accelerating? A. Yes B. No
Circular Motion A car is traveling around a curve at a steady 45 mph. Is the car accelerating? A. Yes B. No Circular Motion A car is traveling around a curve at a steady 45 mph. Which vector shows the
More informationLecture III. Introduction to Mechanics, Heat, and Sound /FIC 318
Introduction to Mechanics, Heat, and Sound /FIC 318 Lecture III Motion in two dimensions projectile motion The Laws of Motion Forces, Newton s first law Inertia, Newton s second law Newton s third law
More information1. The property of matter that causes an object to resist changes in its state of motion is called:
SPH3U Exa Review 1. The property of atter that causes an object to resist changes in its state of otion is called: A. friction B. inertia C. the noral force D. tension 1. The property of atter that causes
More informationGeneral Physics I Spring Applying Newton s Laws
General Physics I Spring 2011 Applying Newton s Laws 1 Equilibrium An object is in equilibrium if the net force acting on it is zero. According to Newton s first law, such an object will remain at rest
More informationPHYS 101 Previous Exam Problems. Force & Motion I
PHYS 101 Previous Exam Problems CHAPTER 5 Force & Motion I Newton s Laws Vertical motion Horizontal motion Mixed forces Contact forces Inclines General problems 1. A 5.0-kg block is lowered with a downward
More informationFree Body Diagram Practice
Name: Free Body Diagram Practice Per: Read each scenario and draw a diagram of the forces acting upon the object(s). 1. A book is at rest on a table top. Diagram the forces acting on the book. 2. A girl
More informationUNIT XX: DYNAMICS AND NEWTON S LAWS. DYNAMICS is the branch of mechanics concerned with the forces that cause motions of bodies
I. Definition of FORCE UNIT XX: DYNAMICS AND NEWTON S LAWS DYNAMICS is the branch of mechanics concerned with the forces that cause motions of bodies FORCE is a quantitative interaction between two (or
More informationNewton s Laws of Motion
Newton s Laws of Motion Observation #1 An object at rest remains at rest, unless something makes it move. Observation #2 A object in motion continues in motion with constant velocity, unless something
More informationAugust 05, Chapter 4 - Dynamics - WHY things move Newton has THREE laws of motion
Chapter 4 - Dynamics - WHY things move Newton has THREE laws of motion 1st Law Law of Inertia - An object in CONSTANT motion remains in CONSTANT motion and an object at rest remains at rest UNLESS acted
More informationLecture PowerPoints. Chapter 4 Physics: for Scientists & Engineers, with Modern Physics, 4th edition Giancoli
Lecture PowerPoints Chapter 4 Physics: for Scientists & Engineers, with Modern Physics, 4th edition Giancoli 2009 Pearson Education, Inc. This work is protected by United States copyright laws and is provided
More informationWhy constant (or straight line) motion? Remember, if an object turns at a constant speed it is accelerating.
Newton s 1st Law Newton s 1st Law of Motion - An object in constant motion will continue in constant motion or an object at rest will stay at rest unless acted upon by an unbalanced force. Unbalanced force
More informationThe magnitude of this force is a scalar quantity called weight.
Everyday Forces has direction The gravitational force (F g ) exerted on the ball by Earth is a vector directed toward the center of the earth. The magnitude of this force is a scalar quantity called weight.
More information1. (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
More informationThe Laws of Motion. Newton s first law Force Mass Newton s second law Newton s third law Examples
The Laws of Motion Newton s first law Force Mass Newton s second law Newton s third law Examples Isaac Newton s work represents one of the greatest contributions to science ever made by an individual.
More informationTue Sept 15. Dynamics - Newton s Laws of Motion. Forces: Identifying Forces Free-body diagram Affect on Motion
Tue Sept 15 Assignment 4 Friday Pre-class Thursday Lab - Print, do pre-lab Closed toed shoes Exam Monday Oct 5 7:15-9:15 PM email me if class conflict or extended time Dynamics - Newton s Laws of Motion
More informationNewton s Laws of Motion. Chapter 4
Newton s Laws of Motion Chapter 4 Newton s First Law of Motion Force A force is a push or pull. An object at rest needs a force to get it moving; a moving object needs a force to change its velocity. Force
More informationPhysics 1A Lecture 4B. "Fig Newton: The force required to accelerate a fig inches per second. --J. Hart
Physics 1A Lecture 4B "Fig Newton: The force required to accelerate a fig 39.37 inches per second. --J. Hart Types of Forces There are many types of forces that we will apply in this class, let s discuss
More informationAn Introduction to Forces Identifying Forces. An Introduction to Forces Forces-part 1. Forces are Interactions. What Is a Force? Identifying Forces
An Introduction to s s-part 1 Identify s,, and FBDs-KJF An Introduction to s Identifying s s are Interactions A force is an interaction between 2 objects Touching: Some forces require contact At a distance:
More informationact concurrently on point P, as shown in the diagram. The equilibrant of F 1
Page 1 of 10 force-friction-vectors review Name 12-NOV-04 1. A 150.-newton force, F1, and a 200.-newton force, F 2, are applied simultaneously to the same point on a large crate resting on a frictionless,
More informationForces and Newton s Laws Reading Notes. Give an example of a force you have experienced continuously all your life.
Forces and Newton s Laws Reading Notes Name: Section 4-1: Force What is force? Give an example of a force you have experienced continuously all your life. Give an example of a situation where an object
More informationChapter 5 Lecture. Pearson Physics. Newton's Laws of Motion. Prepared by Chris Chiaverina Pearson Education, Inc.
Chapter 5 Lecture Pearson Physics Newton's Laws of Motion Prepared by Chris Chiaverina Chapter Contents Newton's Laws of Motion Applying Newton's Laws Friction Newton's Laws of Motion Two of the most important
More informationAn Introduction to Forces Forces-part 1. Forces are Interactions
An Introduction to Forces Forces-part 1 PHYS& 114: Eyres Forces are Interactions A force is an interaction between 2 objects Touching At a distance See the Fundamental Particle Chart (http://www.cpepphysics.org/images/2014-fund-chart.jpg)
More informationSolving two-body problems with Newton s Second Law. Example Static and Kinetic Friction. Section 5.1 Friction 10/15/13
Solving two-body problems with Newton s Second Law You ll get multiple equations from the x and y directions, these equations can be solved simultaneously to find unknowns 1. Draw a separate free body
More informationPage 1. Name: Section This assignment is due at the first class in 2019 Part I Show all work!
Name: Section This assignment is due at the first class in 2019 Part I Show all work! 7164-1 - Page 1 1) A car travels at constant speed around a section of horizontal, circular track. On the diagram provided
More informationEnergy and Momentum Review Problems
Energy and Momentum Review Problems NAME 1. In which one of the following situations is zero net work done? A) A ball rolls down an inclined plane. B) A physics student stretches a spring. C) A projectile
More informationChapter 5. The Laws of Motion
Chapter 5 The Laws of Motion The Laws of Motion The description of an object in motion included its position, velocity, and acceleration. There was no consideration of what might influence that motion.
More informationCHAPTER 4 NEWTON S LAWS OF MOTION
62 CHAPTER 4 NEWTON S LAWS O MOTION CHAPTER 4 NEWTON S LAWS O MOTION 63 Up to now we have described the motion of particles using quantities like displacement, velocity and acceleration. These quantities
More information