*************************************************************************
|
|
- John Byrd
- 5 years ago
- Views:
Transcription
1 Your Name: TEST #2 Print clearly. On the Scantron, fill out your student ID, leaving the first column empty and starting in the second column. Also write your name, class time (11:30 or 12:30), and Test 2 at the bottom. There are 20 equally-weighted questions on this test. There is only one correct answer per question. Mark your answer on the Scantron. The second to last page is blank for extra space if needed. The formulas are on the last page so you can separate it for easy access. The key will be posted online after all make-up tests are completed. ************************************************************************* 1. A 10 kg box is being pulled across a level surface at a constant velocity by a rope with a magnitude of 5.0 N at a 15 degree angle above the horizontal. What is the magnitude of the force of kinetic friction opposing the motion? a) 1.3 N b) 3.7 N c) 4.8 N d) 5.2 N e) 8.2 N 2. If an object of mass m moves with constant velocity v, the net force on the object is a) mv b) a c) mg d) 0 e) None of these answers are correct.
2 3. What is the magnitude of the acceleration of a block sliding down a frictionless 25 degree incline? a) 2.1 m/s 2 b) 3.1 m/s 2 c) 4.1 m/s 2 d) 8.9 m/s 2 4. A spaceship drifts sideways in outer space from point P to point Q as shown below. The spaceship is subject to no outside forces. When the spaceship reaches position Q, the spaceship s engine turns on and produces a constant force on the spaceship at a right angle to the line PQ. The constant force is maintained until the spaceship reaches a point R in space (also shown below). As the spaceship moves from point Q to point R, its speed is a) constant. b) continuously increasing. c) continuously decreasing. d) increasing for a while and constant thereafter. e) constant for a while and decreasing thereafter.
3 5. Consider a 25 kg dresser at rest on an inclined ramp that makes an angle of 20 degrees with the ground. The frictional force acting on the ramp is 30 N. What is the normal force on the dresser? (I purposely have not listed the coefficient of friction, as it is not required to solve the problem.) a) 10 N b) 30 N c) 200 N d) 220 N e) 230 N 6. A large crate is placed in the back of a pickup truck. It is not tied down. As the truck accelerates forward, the crate remains at rest relative to the truck (i.e., the crate does not slide). What force causes the crate to accelerate forward? a) The normal force b) The gravitational force c) The static friction between the crate and the floor of the truck d) The difference between the normal force and the weight e) The kinetic friction between the crate and the floor of the truck
4 7. You re helping a friend move a heavy couch (mass 200 kg) across a carpet, and find you must exert a horizontal force of 700 N to get the couch to barely move. Once the couch starts moving, you continue to push with 700 N. Your friend, a physics major, estimates that it then accelerates at 1.10 m/s 2. What is the coefficient of static friction between the couch and the carpet? a) 0.12 b) 0.31 c) 0.36 d) 0.55 e) For the couch and carpet in the previous problem, what is the force of kinetic friction? a) 220 N b) 360 N c) 480 N d) 630 N e) 700 N
5 9. A mass, M1 = 30kg, is at rest on an incline of θ = 35 o, connected by a string to a wall as shown in the below diagram. What is the tension in the string connected to the wall? Assume the incline is frictionless. a) 1 N b) 66 N c) 100 N d) 169 N e) 1050 N 10. A firefly is flying peacefully through the forest and sees beautiful, swiftly-moving lights just ahead. It flies toward the lights and comes upon a road, then gets hit by an oncoming bus. Which statement is true? a) The magnitude of the force of the bus s windshield on the fly is equal to that of the fly on the windshield. b) The force of the bus s windshield on the fly has a greater magnitude than the force of the fly on the bus s windshield. c) The force of the fly on the bus s windshield has a greater magnitude than the force of the bus s windshield on the fly. d) Not enough information to determine.
6 11. A 10 kg box is being pulled a distance of 3.0 m across a level surface at a constant velocity by a rope with a magnitude of 5.0 N at a 15 degree angle above the horizontal. How much work is done by the rope on the box? a) 10 J b) 12 J c) 15 J d) 30 J e) 42 J 12. A truck weighs twice as much as a car, and is moving at twice the speed of the car. Which statement is true about the truck s kinetic energy compared to that of the car? a) They have the same kinetic energy. b) The truck has 2 times the kinetic energy of the car. c) The truck has 4 times the kinetic energy of the car. d) The truck has 8 times the kinetic energy of the car. e) The truck has 16 times the kinetic energy of the car.
7 13. A 50 N grocery bag is moved from a height of 1 m above the floor to a height of 3 m above the floor. What is the increase in its gravitational potential energy? a) 50 J b) 100 J c) 150 J d) 980 J e) 1470 J 14. A house cat with a mass of 5.0 kg jumps with an initial speed of 4.0 m/s from a 1.2 meter high countertop onto the floor. Neglecting air resistance, what is the cat s speed immediately before it hits the surface of the floor? a) 1.2 m/s b) 3.4 m/s c) 4.0 m/s d) 5.3 m/s e) 6.3 m/s
8 15. A car of mass m traveling at speed v crashes into the rear of a truck of mass 2m that was at rest and in neutral at an intersection. If the collision is perfectly inelastic, what is the speed of the combined car and truck after the collision? a) v/3 b) v/2 c) v d) 2v e) none of these 16. A 30,000 kg semi-truck is rolling through an intersection at 5 km/h. A 1000 kg sports car is driving on the highway with a speed limit of 120 km/h. In order for the car s momentum to be greater than the truck s momentum what must be true? a) The car must drive the same speed as the truck. b) The car must drive 25 km/h. c) The car must exceed the speed limit. d) It is not possible for the car s momentum to be greater than the truck s momentum.
9 17. Two balls collide, as shown in the figure below. The white ball has a mass 1.0 kg, and the grey ball has a mass 5.0 kg. Before the collision, the white ball is travelling with a velocity 5.0 m/s and the grey ball is travelling towards the white one with a velocity of -10 m/s. After the collision, the white ball is travelling at a velocity of -5.0 m/s. What is the velocity of the grey ball after the collision? a) -8.0 m/s b) -5.3 m/s c) -5.0 m/s d) +8.0 m/s e) +10 m/s 18. The previous system was an example of an inelastic collision. What is the change in energy of the system from before to after the collision? a) 0 J b) 45 J c) 64 J d) 90 J e) 263 J
10 19. You re stranded near the edge of a frozen, frictionless lake holding a rifle. To get to the edge of the pond, you brace the rifle against your shoulder and fire horizontally, directly away from the nearest lake edge. You know the bullet weighs 3.0 g and the bullet exits the rifle at a speed of m/s, and you know you and the rifle together weigh kg, so you can calculate, based on your recoil, how long it should take you to reach the edge of the pond after firing the gun. The edge of the pond is only 2.0 meters away. How long will it take you to reach the edge of the pond after firing the gun? a) 3.2 s b) 5.5 s c) 1.4 min d) 3.5 min e) 1.6 hours 20. Let s say a baseball player standing on the pitcher s mount throws a pitch at 90 mph (40.2 m/s). Determine the impulse required for the pitcher to give a kg baseball such a momentum. a) 4.2 kg m/s b) 5.8 kg m/s c) 6.4 kg m/s d) 11.4 kg m/s e) 1.3 x 10 4 kg m/s
11
12 Possibly Useful Information (bold indicates a vector) v = vo + a t x = vot + ½ a t 2 v 2 = vo a x 1 in = 2.54 cm Weight = W = m g g = 9.8 m/s 2 f k = k n f s s n 1 mile = m sin θ = opposite/hyp cos θ = adjacent/hyp tan θ = opposite/adj a 2 + b 2 = c 2 1 kg = 2.2 pounds 1 m = 3.28 ft quadratic: ax 2 +bx+c=0 x=(-b (b 2-4ac)^½)/2a Newton s 1st Law: Every object continues in its state of rest, or of constant speed in a straight line, until a nonzero net force acts on it. Newton s 2nd Law: net F = m a Newton s 3rd Law: When one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. ************************************************************************* Work = F x = (component of force in the direction of displacement) (displacement) Kinetic Energy: KE = ½ m v 2 Power = Work/time Work-Energy Theorem W net = W nc + W c = KE Gravitational Potential Energy: GPE = mgy where y is vertical position Work done by gravity: W g = GPE W nc + KE i + PE i = KE f + PE f KE i + PE i = KE f + PE f Momentum: p = m v where W nc is work done by frictional forces if there is no friction I (impulse) = change in momentum = Δp = F Δt Conservation of momentum: m1v1i + m2v2i = m1v1f + m2v2f Elastic collision: v1i-v2i = -(v1f-v2f) Perfectly inelastic collision: m1v1i + m2v2i = (m1+ m2)vf *************************************************************************
PRACTICE TEST for Midterm Exam
South Pasadena AP Physics PRACTICE TEST for Midterm Exam FORMULAS Name Period Date / / d = vt d = v o t + ½ at 2 d = v o + v 2 t v = v o + at v 2 = v 2 o + 2ad v = v x 2 + v y 2 = tan 1 v y v v x = v cos
More information1. A sphere with a radius of 1.7 cm has a volume of: A) m 3 B) m 3 C) m 3 D) 0.11 m 3 E) 21 m 3
1. A sphere with a radius of 1.7 cm has a volume of: A) 2.1 10 5 m 3 B) 9.1 10 4 m 3 C) 3.6 10 3 m 3 D) 0.11 m 3 E) 21 m 3 2. A 25-N crate slides down a frictionless incline that is 25 above the horizontal.
More informationPhysics 6A TR Section Winter 2012 Midterm
Physics 6A TR Section Winter 2012 Midterm The test consists of 19 multiple choice questions. Enter the answer to the multiple choice questions in the pink scantron sheet. Use a pencil, not a pen. There
More informationThe diagram below shows a block on a horizontal frictionless surface. A 100.-newton force acts on the block at an angle of 30. above the horizontal.
Name: 1) 2) 3) Two students are pushing a car. What should be the angle of each student's arms with respect to the flat ground to maximize the horizontal component of the force? A) 90 B) 0 C) 30 D) 45
More information*************************************************************************
Your Name: TEST #3 Print clearly. There are 20 equally-weighted questions on this test (two-part problems count as two separate questions). There is only one correct answer per question. Clearly circle
More informationReview. Kinetic Energy Work Hooke s s Law Potential Energy Conservation of Energy Power 1/91
Review Kinetic Energy Work Hooke s s Law Potential Energy Conservation of Energy Power 1/91 The unit of work is the A. Newton B. Watt C. Joule D. Meter E. Second 2/91 The unit of work is the A. Newton
More informationWhich iceboat crosses the finish line with more kinetic energy (KE)?
Two iceboats (one of mass m, one of mass 2m) hold a race on a frictionless, horizontal, frozen lake. Both iceboats start at rest, and the wind exerts the same constant force on both iceboats. Which iceboat
More informationExam #2, Chapters 5-7 PHYS 101-4M MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam #2, Chapters 5-7 Name PHYS 101-4M MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The quantity 1/2 mv2 is A) the potential energy of the object.
More information*************************************************************************
Your Name: TEST #1 Print clearly. On the Scantron, fill out your student ID, leaving the first column empty and starting in the second column. Also write your name, class time (11:30 or 12:30), and Test
More informationPhysics Semester 1 Review
Physics Semester 1 Review Name: 1. Define: Speed Velocity Acceleration Use the graph to the right to answer questions 2-4. 2. How far did the object travel in 3 seconds? 3. How long did it take for the
More informationSometimes (like on AP test) you will see the equation like this:
Work, Energy & Momentum Notes Chapter 5 & 6 The two types of energy we will be working with in this unit are: (K in book KE): Energy associated with of an object. (U in book PE): Energy associated with
More informationLAWS OF MOTION Newtons laws of motion. (i) First law: Law of inertia. Every body continues to be in its state of rest or of uniform motion in a
LAWS OF MOTION Newtons laws of motion. (i) First law: Law of inertia. Every body continues to be in its state of rest or of uniform motion in a straight line unless compelled to change that state by an
More informationPractice Test for Midterm Exam
A.P. Physics Practice Test for Midterm Exam Kinematics 1. Which of the following statements are about uniformly accelerated motion? Select two answers. a) If an object s acceleration is constant then it
More informationChapter 1 about science 1. Differentiate between hypothesis and theory.
Physics A Exam Review Name Hr PHYSICS SCIENTIFIC METHOD FACT HYPOTHESIS LAW THEORY PHYSICAL SCIENCE UNITS VECTOR MAGNITUDE FORCE MECHANICAL EQUILIBRIUM NET FORCE SCALAR RESULTANT TENSION SUPPORT FORCE
More informationImpulse/Momentum And Its Conservation
Impulse/Momentum And Its Conservation Which is easier to stop? Truck, car, bowling ball, or baseball all moving at 30 mph. Baseball -it is the least massive. Baseball at 30 mph or a baseball at 90 mph.
More informationName ID Section. 1. One mile is equal to 1609 m; 1 hour is equal to 3600 s. The highway speed limit of 65 mph is equivalent to the speed of:
The exam is closed book and closed notes. There are 30 multiple choice questions. Make sure you put your name, section, and ID number on the SCANTRON form. The answers for the multiple choice Questions
More informationName: Class: Date: so sliding friction is better so sliding friction is better d. µ k
Name: Class: Date: Exam 2--PHYS 101-F08 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. You put your book on the seat next to you. When the bus stops,
More informationVersion PREVIEW Semester 1 Review Slade (22222) 1
Version PREVIEW Semester 1 Review Slade () 1 This print-out should have 48 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. Holt SF 0Rev 10A
More information1) To Work or Not to Work
1) To Work or Not to Work Is it possible to do work on an object that remains at rest? 1) yes 2) no 1) To Work or Not to Work Is it possible to do work on an object that remains at rest? 1) yes 2) no Work
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 information(A) 0 (B) mv (C) 2mv (D) 2mv sin θ (E) 2mv cos θ
Physics 1 Lesson 8 Forces and Momentum Homework Outcomes 1. Define linear momentum. 2. Determine the total linear momentum of a system. 3. Apply the Law of Conservation of Momentum to solve problems. 4.
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 informationAP Physics First Nine Weeks Review
AP Physics First Nine Weeks Review 1. If F1 is the magnitude of the force exerted by the Earth on a satellite in orbit about the Earth and F2 is the magnitude of the force exerted by the satellite on the
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 information8. The graph below shows a beetle s movement along a plant stem.
Name: Block: Date: Introductory Physics: Midyear Review 1. Motion and Forces Central Concept: Newton s laws of motion and gravitation describe and predict the motion of most objects. 1.1 Compare and contrast
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 informationThis Week. 9/5/2018 Physics 214 Fall
This Week Momentum Is momentum in basketball physics? Rockets and guns How do spaceships work? Collisions of objects They get impulses! Practical Propulsion 9/5/2018 Physics 214 Fall 2018 1 Momentum What
More informationMomentum, Work and Energy Review
Momentum, Work and Energy Review 1.5 Momentum Be able to: o solve simple momentum and impulse problems o determine impulse from the area under a force-time graph o solve problems involving the impulse-momentum
More informationName: Class: Date: d. none of the above
Name: Class: Date: H Phys quiz Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following is the cause of an acceleration? a. speed b. inertia
More informationThis Week. 7/29/2010 Physics 214 Fall
This Week Momentum Is momentum in basketball physics? Rockets and guns How do spaceships work? Collisions of objects They get impulses! Practical Propulsion 7/29/2010 Physics 214 Fall 2010 1 Momentum What
More informationWelcome back to Physics 211
Welcome back to Physics 211 Today s agenda: Circular motion Impulse and momentum 08-2 1 Current assignments Reading: Chapter 9 in textbook Prelecture due next Thursday HW#8 due NEXT Friday (extension!)
More informationPRACTICE TEST for Midterm Exam
South Pasadena AP Physics PRACTICE TEST for Midterm Exam FORMULAS Name Period Date / / d = vt d = v ot + ½ at d = v o + v t v = v o + at v = v o + ad v = v x + v y = tan 1 v y v v x = v cos v y = v sin
More informationv (m/s) 10 d. displacement from 0-4 s 28 m e. time interval during which the net force is zero 0-2 s f. average velocity from 0-4 s 7 m/s x (m) 20
Physics Final Exam Mechanics Review Answers 1. Use the velocity-time graph below to find the: a. velocity at 2 s 6 m/s v (m/s) 1 b. acceleration from -2 s 6 c. acceleration from 2-4 s 2 m/s 2 2 4 t (s)
More informationREVISING MECHANICS (LIVE) 30 JUNE 2015 Exam Questions
REVISING MECHANICS (LIVE) 30 JUNE 2015 Exam Questions Question 1 (Adapted from DBE November 2014, Question 2) Two blocks of masses 20 kg and 5 kg respectively are connected by a light inextensible string,
More informationForce Concept Inventory
Force Concept Inventory 1. Two metal balls are the same size but one weighs twice as much as the other. The balls are dropped from the roof of a single story building at the same instant of time. The time
More information2) 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
More information1. A train moves at a constant velocity of 90 km/h. How far will it move in 0.25 h? A. 10 km B km C. 25 km D. 45 km E. 50 km
Name: Physics I Mid Term Exam Review Multiple Choice Questions Date: Mr. Tiesler 1. A train moves at a constant velocity of 90 km/h. How far will it move in 0.25 h? A. 10 km B. 22.5 km C. 25 km D. 45 km
More informationPHYSICS FORMULAS. A. B = A x B x + A y B y + A z B z = A B cos (A,B)
PHYSICS FORMULAS A = A x i + A y j Φ = tan 1 A y A x A + B = (A x +B x )i + (A y +B y )j A. B = A x B x + A y B y + A z B z = A B cos (A,B) linear motion v = v 0 + at x - x 0 = v 0 t + ½ at 2 2a(x - x
More informationTopic 2 Revision questions Paper
Topic 2 Revision questions Paper 1 3.1.2018 1. [1 mark] The graph shows the variation of the acceleration a of an object with time t. What is the change in speed of the object shown by the graph? A. 0.5
More informationImpulse and Momentum continued
Chapter 7 Impulse and Momentum continued 7.2 The Principle of Conservation of Linear Momentum External forces Forces exerted on the objects by agents external to the system. Net force changes the velocity
More information4) Vector = and vector = What is vector = +? A) B) C) D) E)
1) Suppose that an object is moving with constant nonzero acceleration. Which of the following is an accurate statement concerning its motion? A) In equal times its speed changes by equal amounts. B) In
More informationWelcome back to Physics 211
Welcome back to Physics 211 Today s agenda: Impulse and momentum 09-2 1 Current assignments Reading: Chapter 10 in textbook Prelecture due next Tuesday HW#8 due this Friday at 5 pm. 09-2 2 9-2.1 A crash
More informationDynamics Multiple Choice Homework
Dynamics Multiple Choice Homework PSI Physics Name 1. In the absence of a net force, a moving object will A. slow down and eventually stop B. stop immediately C. turn right D. move with constant velocity
More information6 th week Lectures Feb. 12. Feb
Momentum Rockets and guns 6 th week Lectures Feb. 12. Feb. 16. 2018. How do spaceships work? Collisions of objects They get impulses! Practical Propulsion 2/11/2018 Physics 214 Spring 2018 1 Announcements
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 informationPHYS 154 Practice Test 3 Spring 2018
The actual test contains 1 multiple choice questions and 2 problems. However, for extra exercise, this practice test includes 4 problems. Questions: N.B. Make sure that you justify your answers explicitly
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 information7. Two forces are applied to a 2.0-kilogram block on a frictionless horizontal surface, as shown in the diagram below.
1. Which statement about the movement of an object with zero acceleration is true? The object must be at rest. The object must be slowing down. The object may be speeding up. The object may be in motion.
More information1. The diagram below shows the variation with time t of the velocity v of an object.
1. The diagram below shows the variation with time t of the velocity v of an object. The area between the line of the graph and the time-axis represents A. the average velocity of the object. B. the displacement
More informationPS 300 extra credit for exam 1 (5% max) due 2/13/18
PS 300 extra credit for exam 1 (5% max) due 2/13/18 Name: 1. Name three physical properties that describes an object: mass, temperature, density, volume. 2. What is the mass of gasoline (ρ = 0.680 g/cm
More informationPart I Review Unit Review Name Momentum and Impulse
Part I Review Unit Review Name Momentum and Impulse 1. A 5.00-kilogram block slides along a horizontal, frictionless surface at 10.0 meters per second for 4.00 seconds. The magnitude of the block's momentum
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
PH105-007 Exam 2 VERSION A Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A 1.0-kg block and a 2.0-kg block are pressed together on a horizontal
More informationAP Physics C. Momentum. Free Response Problems
AP Physics C Momentum Free Response Problems 1. A bullet of mass m moves at a velocity v 0 and collides with a stationary block of mass M and length L. The bullet emerges from the block with a velocity
More informationCenter of Mass & Linear Momentum
PHYS 101 Previous Exam Problems CHAPTER 9 Center of Mass & Linear Momentum Center of mass Momentum of a particle Momentum of a system Impulse Conservation of momentum Elastic collisions Inelastic collisions
More informationAP Physics 1 Momentum and Impulse Practice Test Name
AP Physics 1 Momentum and Impulse Practice Test Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A rubber ball and a lump of clay have equal
More information1 In the absence of a net force, a moving object will. slow down and eventually stop stop immediately turn right move with constant velocity turn left
Slide 1 / 51 1 In the absence of a net force, a moving object will slow down and eventually stop stop immediately turn right move with constant velocity turn left Slide 2 / 51 2 When a cat sleeps on a
More informationINSTRUCTIONS FOR USE. This file can only be used to produce a handout master:
INSTRUCTIONS FOR USE This file can only be used to produce a handout master: Use print from the File menu to make a printout of the test. You may not modify the contents of this file. IMPORTANT NOTICE:
More informationAnnouncements. There will still be a WebAssign due this Friday, the last before the midterm.
Announcements THERE WILL BE NO CLASS THIS FRIDAY, MARCH 5 (We are 1 full lecture ahead of the syllabus, so we will still have review/problem solving on March 7 and 9). There will still be a WebAssign due
More informationNon-textbook problem #I: The kinetic energy of a body depends on its mass and speed as. K = 1 2 mv2 (1) m 1 v 2 1 = 1 2 m 2v 2 2 (2)
PHY 309 K. Solutions for Problem set # 7. Non-textbook problem #I: The kinetic energy of a body depends on its mass and speed as K = 1 mv (1) Therefore, two bodies of respective masses m 1 and m and speeds
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 informationPage 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
More informationPYP 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
More informationRELEASED. Go to next page. 2. The graph shows the acceleration of a car over time.
1. n object is launched across a room. How can a student determine the average horizontal velocity of the object using a meter stick and a calculator? The student can calculate the object s initial potential
More informationMidterm Review. 1. A car accelerates uniformly from rest to a speed of 10 meters per second in 2 seconds. The acceleration of the car is
Name: Date: 1. car accelerates uniformly from rest to a speed of 10 meters per second in 2 seconds. The acceleration of the car is 1.. 0.2 m/sec 2. 5 m/sec 2 C. 10 m/sec 2 D. 20 m/sec 2 2. steel ball is
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 informationThe graph shows how an external force applied to an object of mass 2.0 kg varies with time. The object is initially at rest.
T2-2 [195 marks] 1. The graph shows how an external force applied to an object of mass 2.0 kg varies with time. The object is initially at rest. What is the speed of the object after 0.60 s? A. 7.0 ms
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 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 informationName: Date: Period: AP Physics C Work HO11
Name: Date: Period: AP Physics C Work HO11 1.) Rat pushes a 25.0 kg crate a distance of 6.0 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction
More informationAP Physics I Summer Work
AP Physics I Summer Work 2018 (20 points) Please complete the following set of questions and word problems. Answers will be reviewed in depth during the first week of class followed by an assessment based
More informationPhysics 11 (Fall 2012) Chapter 9: Momentum. Problem Solving
Physics 11 (Fall 2012) Chapter 9: Momentum The answers you receive depend upon the questions you ask. Thomas Kuhn Life is a mirror and will reflect back to the thinker what he thinks into it. Ernest Holmes
More informationFinal Exam April 26, 2016
PHYS 050 Spring 016 Name: Final Exam April 6, 016 INSTRUCTIONS: a) No books or notes are permitted. b) You may use a calculator. c) You must solve all problems beginning with the equations on the Information
More information2. SKIP THIS YEAR What event will produce the greatest increase in the gravitational force between the two masses?
Forces Review: look over all labs and worksheets. Your answers should be in another color pen. This is not all inclusive of items on the test but a very close representation. 1. The table shows the results
More informationLecture 18. Newton s Laws
Agenda: Review for exam Lecture 18 Assignment: For Tuesday, Read chapter 14 Physics 207: Lecture 18, Pg 1 Newton s Laws Three blocks are connected on the table as shown. The table has a coefficient of
More informationFinal Review. If a car has 3,000kg-m/s of momentum, and a mass of 1,000kg. How fast is it moving? A ball that has momentum must also have energy.
Physics Name: Date: Period: Final Review Write the appropriate formulas with all units below. Impulse Momentum Conservation of Momentum Rank these in order from least to most momentum:.01kg mass moving
More information2. What would happen to his acceleration if his speed were half? Energy The ability to do work
1. A 40 kilogram boy is traveling around a carousel with radius 0.5 meters at a constant speed of 1.7 meters per second. Calculate his centripetal acceleration. 2. What would happen to his acceleration
More informationPhysics 115 Mock Midterm Sunday, October 18, 6pm
Physics 115 Mock Midterm Sunday, October 18, 6pm Note: This mock test consists of questions covered in Physics 115. This test is not comprehensive. The problems on this test were created by your SSS peer
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 informationChapter Work, Energy and Power. Q1. The co-efficient of restitution e for a perfectly elastic collision is [1988] (a) 1 (b) 0 (c) (d) 1 Ans: (a)
Chapter Work, Energy and Power Q1. The co-efficient of restitution e for a perfectly elastic collision is [1988] (a) 1 (b) 0 (c) (d) 1 Q2. A bullet of mass 10g leaves a rifle at an initial velocity of
More informationMomentum Conceptual Questions. 1. Which variable has more impact on an object s motion? Its mass or its velocity?
AP Physics I Momentum Conceptual Questions 1. Which variable has more impact on an object s motion? Its mass or its velocity? 2. Is momentum a vector or a scalar? Explain. 3. How does changing the duration
More informationUNIT 4 MOMENTUM & IMPULSE
UNIT 4 UNIT 4 MOMENTUM & IMPULSE IMPULSE-MOMENTUM THEOREM Remember, means final initial p = p f p i v = v f v i J = F( t) = p = m v = (mv f mv i ) The impulse, J, that acts on an object is equal to the
More informationChapter 6 - Linear Momemtum and Collisions
Name Date Chapter 6 - Linear Momemtum and Collisions MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the SI unit of momentum? A) N/s B)
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 informationPhysics: Impulse / Momentum Problem Set
Physics: Impulse / Momentum Problem Set A> Conceptual Questions 1) Explain two ways a heavy truck and a person on a skateboard can have the same momentum. 2) In stopping an object, how does the time of
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 informationvelocity, force and momentum are vectors, therefore direction matters!!!!!!!
1 Momentum, p is mass times velocity: p = m v vector! unit: (p) = kg m/s Newton s second law: Force = time rate of change of momentum Net force F will produce change in momentum Δp of the object on which
More informationWork. Work is the measure of energy transferred. Energy: the capacity to do work. W = F X d
ENERGY CHAPTER 11 Work Work is the measure of energy transferred. Energy: the capacity to do work. W = F X d Units = Joules Work and energy transferred are equivalent in ideal systems. Two Types of Energy
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
PH 105 Exam 2 VERSION A Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Is it possible for a system to have negative potential energy? A)
More informationChapter 7. Impulse and Momentum
Chapter 7 Impulse and Momentum Chaper 6 Review: Work and Energy Forces and Displacements Effect of forces acting over a displacement Work W = (F cos)s Work changes the Kinetic Energy of a mass Kinetic
More information3. How long must a 100 N net force act to produce a change in momentum of 200 kg m/s? (A) 0.25 s (B) 0.50 s (C) 1.0 s (D) 2.0 s (E) 4.
AP Physics Multiple Choice Practice Momentum and Impulse 1. A car of mass m, traveling at speed v, stops in time t when maximum braking force is applied. Assuming the braking force is independent of mass,
More informationComprehensive Exam Session III Classical Mechanics Physics Department- Proctor: Dr. Jack Straton (Sun. Jan 11 th, 2015) (3 hours long 1:00 to 4:00 PM)
Letter Comprehensive Exam Session III Classical Mechanics Physics Department- Proctor: Dr. Jack Straton (Sun. Jan 11 th, 2015) (3 hours long 1:00 to 4:00 PM) If you cannot solve the whole problem, write
More information1. Which one of the following situations is an example of an object with a non-zero kinetic energy?
Name: Date: 1. Which one of the following situations is an example of an object with a non-zero kinetic energy? A) a drum of diesel fuel on a parked truck B) a stationary pendulum C) a satellite in geosynchronous
More informationy(t) = y 0 t! 1 2 gt 2. With y(t final ) = 0, we can solve this for v 0 : v 0 A ĵ. With A! ĵ =!2 and A! = (2) 2 + (!
1. The angle between the vector! A = 3î! 2 ĵ! 5 ˆk and the positive y axis, in degrees, is closest to: A) 19 B) 71 C) 90 D) 109 E) 161 The dot product between the vector! A = 3î! 2 ĵ! 5 ˆk and the unit
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
PH 105 Exam 2 VERSION B Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A boy throws a rock with an initial velocity of 2.15 m/s at 30.0 above
More informationConcept Question: Normal Force
Concept Question: Normal Force Consider a person standing in an elevator that is accelerating upward. The upward normal force N exerted by the elevator floor on the person is 1. larger than 2. identical
More informationRegents Physics. Physics Midterm Review - Multiple Choice Problems
Name Physics Midterm Review - Multiple Choice Problems Regents Physics 1. A car traveling on a straight road at 15.0 meters per second accelerates uniformly to a speed of 21.0 meters per second in 12.0
More informationAP Physics 1 Multiple Choice Questions - Chapter 4
1 Which of ewton's Three Laws of Motion is best expressed by the equation F=ma? a ewton's First Law b ewton's Second Law c ewton's Third Law d one of the above 4.1 2 A person is running on a track. Which
More informationAP Physics 1 Summer Assignment
Name: Email address (write legibly): AP Physics 1 Summer Assignment Packet 3 The assignments included here are to be brought to the first day of class to be submitted. They are: Problems from Conceptual
More informationUnit 2- Energy and Momentum Test
Name: Class: Date: ID: A Unit 2- Energy and Momentum Test Multiple Choice Identify the choice that best completes the statement or answers the question.. Which of the following is not a unit of energy?
More informationRELEASED FORM RELEASED. North Carolina Test of Physics
Name Physics Form North arolina Test of Physics RELESE Public Schools of North arolina www.ncpublicschools.org State oard of Education epartment of Public Instruction ivision of ccountability Services/North
More information