# Review PHYS114 Chapters 4-7

Size: px
Start display at page:

## Transcription

1 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 the object experience? A) 98 N B) 63 N C) 16 N D) 46 N 2) A Ferrari accelerates from 0 to km/h in 4.80 s. What force (in Newtons) does a passenger of mass 68.0 kg experience during acceleration? A) 82.0 N B) 311 N C) 394 N D) 342 N 3) A child pulls on a wagon handle at an angle 37 above the horizontal with a force of 45 N. If the wagon accelerates at 8.1 m/s 2 horizontally, what is the mass of the wagon? Assume frictional forces are negligible. A) 5.6 kg B) 4.4 kg C) 3.1 kg D) 3.7 kg 4) Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of and the other child pulls to the east with a force of What is the magnitude of the net force on the toy? A) 12 N B) 1.0 N C) 9.3 N D) 8.2 N 5) Two forces act on a object. One force has magnitude directed 59 clockwise from the positive and the other has a magnitude at 32 clockwise from the positive What is the magnitude of this object's acceleration? A) 1.1 m/s 2 B) 1.5 m/s 2 C) 1.3 m/s 2 D) 1.7 m/s 2 6) The figure shows an acceleration-versus-force graph for a 125 g object. What should be the value of the first tick-mark on the vertical scale? A) 8 B) C) 4 D) ) The figure shows two forces acting on an object. They have magnitudes = 6.3 N and = 2.1 N. What third force will cause the object to be in equilibrium? A) 4.2 N at 162 counterclockwise from C) 6.6 N at 108 counterclockwise from B) 4.2 N at 108 counterclockwise from D) 6.6 N at 162 counterclockwise from 8) The figure shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of

2 object 2 is 36 kg. What are the masses of objects 1 and 3? A) 72 kg and 18 kg B) 90 kg and 18 kg C) 14 kg and 90 kg D) 14 kg and 72 kg 9) You are making a circular turn in your car when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, it A) moves along a path that is neither straight nor circular. B) continues to follow the same circular path as initially. C) moves along a straight-line path. D) continues to follow a circular path, but with a radius larger than the original radius. 10) Two bodies P and Q on a perfectly smooth horizontal surface are connected by a light cord. The mass of P is greater than that of Q. A horizontal force the right. is applied to Q as shown in the figure, accelerating the bodies to The magnitude of the force exerted by the connecting cord on body P will be A) less than F but not zero. B) greater than F. C) equal to F. D) zero. 11) If a 5.0 kg box is pulled simultaneously by a 10.0 N force and a 5.0 N force, then its acceleration must be 3.0 m/s 2. A) True B) False 12) In a collision between a huge SUV and a small compact car, the SUV exerts a larger force on the compact than the compact exerts on the SUV. A) True B) False 13) In order to lift a bucket of concrete, you must pull up harder on the bucket than it pulls down on you. A) True B) False 14) An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the cable must be greater than the weight of the elevator. A) True B) False 15) A skydiver reaches a "terminal velocity" of If the skydiver has a mass of what is the magnitude of the upward force on the skydiver due to wind resistance? (Use g = 9.8 m/s 2.) A) 6.02 N B) 578 N C) 5.42 N D) 636 N

3 16) A 80 N force is needed to slide a box across a flat surface at a constant velocity. What is the coefficient of kinetic friction between the box and the floor? (Use g = 9.8 m/s 2.) A) 0.16 B) 0.15 C) 0.13 D) ) Starting from rest, a skier slides down a 17.0 slope. If the coefficient of kinetic friction between the skis and snow is and it takes to get to the bottom, how long is the ski trail? (Use g = 9.8 m/s 2.) A) 186 m B) 124 m C) 496 m D) 248 m 18) A 6.0 kg box is held at rest by two ropes that form 30 angles with the vertical. An external force F acts vertically downward on the box. The force exerted by each of the two ropes is denoted by T. A force diagram, showing the four forces that act on the box in equilibrium, is shown in the figure. The magnitude of force F is 410 N. The magnitude of force T is closest to: A) 188 N B) 376 N C) 235 N D) 470 N E) 271 N 19) A 15 kg block is on a ramp that is inclined at 20 above the horizontal. It is connected by a string to a 19 kg mass that hangs over the top edge of the ramp. Assuming that frictional forces may be neglected, what is the magnitude of the acceleration of the 19 kg block? (See the figure.) A) 4.5 m/s 2 B) 4.0 m/s 2 C) 4.2 m/s 2 D) 3.8 m/s 2 Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as shown. An external force P is applied downward on block A. The system accelerates at the rate of 2.5 m/s 2. The tension in the rope connecting block B and block C equals 60 N. 20) In the figure above, the external force P is closest to: A) 170 N B) 250 N C) 210 N D) 230 N E) 190 N

4 21) A person who normally weighs 200 pounds is standing on a scale inside an elevator. The elevator is moving upwards with a speed of 7 m/s, and then begins to slow down at a rate of 5 m/. Before the elevator begins to slow down, the reading of the scale is, and while the elevator is slowing down, the reading of the scale is. A) 200 pounds, 100 pounds B) less than 200 pounds, 100 pounds C) greater than 200 pounds, 100 pounds D) greater than 200 pounds, 0 pounds E) None of the above 22) The figure shows two 1.0 kg blocks connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 250 g. The entire assembly is accelerated upward at by force. What is the tension at the bottom end of rope 1? A) 6.9 N B) 38 N C) 23 N D) 19 N 23) If you were to move into outer space far from any stars or planets, A) your weight would change, but your mass would not change. B) your mass would change, but your weight would not change. C) neither your weight nor your mass would change. D) both your weight and mass would change. E) None of these is true. 24) Two blocks, A and B, are being pulled to the right along a horizontal surface by a horizontal 100 N pull, as shown in the figure. Both of them are moving together at a constant velocity of 2.0 m/s to the right, and both weigh the same. Which of the figures below shows a correct free-body diagram of the horizontal forces acting on upper block, A? A) B) C) D) E)

5 25) A rope is tied to a large crate, which is sitting on a flat surface. The coefficient of static friction between the crate and the ground is 0.9. If a person is to pull on the rope with the minimum force needed such that the crate begins to slide, the angle between the rope and the ground should be A) greater than 0 degrees but less than 90 degrees. B) 90 degrees. C) 0 degrees (rope is horizontal). 26) A block is at rest on a rough incline as shown. The frictional force acting on the block, along the incline, is A) zero. B) less than the weight of the block. C) greater than the weight of the block. D) equal to the weight of the block. 27) Two unequal masses M and m are connected by a light cord passing over a pulley of negligible mass. When released, the system accelerates. Friction is negligible. Which figure below gives the correct free-body force diagrams for the two masses in the moving system? A) B)

6 C) D) D) 28) Calculate the angular speed, in of a flywheel turning at A) rad/s B) rad/s C) rad/s D) rad/s 29) A satellite is in orbit around a planet. The orbital radius is and the gravitational acceleration at that height is What is the satellite's orbital speed? A) 88 m/s B) 28 m/s C) 8.8 m/s D) 280 m/s 30) The figure shows two wires that are tied to a 710 g mass that revolves in a horizontal circle at a constant speed of 7.5 m/s. What is the tension in the upper wire? A) 41 N B) 20 N C) 27 N D) 34 N 31) At a given point above the surface of Earth, the gravitational acceleration is equal to The altitude of this point, above the surface of Earth, in km, is closest to: A) 1500 B) 2000 C) 770 D) 2400 E) ) The weight of spaceman Speff, solely due to the gravitational pull of planet X at its surface, is If he moves to a distance of above the planet's surface, his weight changes to What is the mass of planet X, if Speff's mass is A) kg B) kg C) kg D) kg

7 33) Suppose we want a satellite to revolve around Earth 5 times a day. What should the radius of its orbit be? (Neglect the presence of the Moon.) A) m B) m C) m D) m Ekapluto is an unknown planet that has two moons in circular orbits. The table summarizes the hypothetical data about the moons. 34) In the table, the mass of Ekapluto is closest to: A) 1 kg B) 3 kg C) 1 kg D) 3 kg E) 1 kg 35) A person ties a rock to a string and whirls it around in a vertical circle such that sometimes the rock is going straight upward and sometimes the rock is going straight down. She whirls the rock at the minimum speed (constant in time) such that the string is always taut (no sag). When is the tension the highest? A) It is highest when the rock is at the highest elevation. B) The tension is constant as the rock moves around in a circle. C) It is highest when the rock is at the lowest elevation. 36) A merry-go-round is spinning at a fixed rate. As a person is walking toward the edge, A) the force of static friction must increase in order for the person not to slide off. B) the force of static friction such that the person does not slide off remains the same. C) the force of static friction must decrease in order for the person not to slide off. 37) If you stood on a planet having a mass four times higher than Earth's mass, and a radius two times longer than Earth's radius, you would weigh A) two times more than you do on Earth. B) four times more than you do on Earth. C) two times less than you do on Earth. D) the same as you do on Earth. 38) A 95 N force exerted at the end of a torque wrench gives rise to a torque of What is the angle (assumed to be less than 90 ) between the wrench handle and the direction of the applied force? A) 25 B) 14 C) 18 D) 22

8 39) A particular motor can provide a maximum of of torque. Assuming that all of this torque is used to accelerate a solid, uniform flywheel of mass and radius how long will it take for the flywheel to accelerate from rest to A) 2.10 s B) 3.24 s C) 2.99 s D) 2.47 s 40) The table shows the masses and the coordinates x and y of a set of three point masses in the x-y plane. The masses are interconnected by light struts, forming a rigid body. The moment of inertia of the rigid body, through the center of mass and perpendicular to the x-y plane, is closest to: A) 3600 B) 3200 C) 3000 D) 3800 E) ) A force in the +y direction applied at the point gives rise to a torque of about the origin. Find the magnitude of the force. A) 51 N B) 87 N C) 31 N D) 71 N 42) A rectangular sign h = 20.0 cm high and w = wide loses three of its four support bolts and rotates into the position as shown, with P 1 directly over P 3. It is supported by P 2, which is so tight it holds the sign from further rotation. Find the gravitational torque about P 2, if the mass of the sign is A) 0.27 Nm B) 4.7 Nm C) 2.6 Nm D) 0.48 Nm

9 43) A particular motor can provide a maximum of of torque. Assuming that all of this torque is used to accelerate a solid, uniform flywheel of mass and radius how long will it take for the flywheel to accelerate from rest to A) 2.83 s B) 4.36 s C) 4.03 s D) 3.33 s 44) In the figure, a given force F is applied to a rod in several different ways. In which case is the torque due to F about the pivot P greatest? A) 1 B) 2 C) 3 D) 4 E) 5 45) If a spinning object has a negative angular acceleration, it must be slowing down. A) True B) False

10 1) D 2) C 3) B 4) D 5) A 6) C 7) D 8) C 9) C 10) A 11) B 12) B 13) B 14) A 15) B 16) A 17) D 18) E 19) B 20) E 21) A 22) D 23) A 24) E 25) A 26) B 27) A 28) C 29) D 30) D 31) C 32) B 33) C 34) B 35) C 36) A 37) D 38) C 39) D 40) D 41) C 42) B 43) D 44) A 45) B

### Exam 3 PREP Chapters 6, 7, 8

PHY241 - General Physics I Dr. Carlson, Fall 2013 Prep Exam 3 PREP Chapters 6, 7, 8 Name TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Astronauts in orbiting satellites

### 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

### Practice 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

### PHYS 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

### Q16.: A 5.0 kg block is lowered with a downward acceleration of 2.8 m/s 2 by means of a rope. The force of the block on the rope is:(35 N, down)

Old Exam Question Ch. 5 T072 Q13.Two blocks of mass m 1 = 24.0 kg and m 2, respectively, are connected by a light string that passes over a massless pulley as shown in Fig. 2. If the tension in the string

### 1. 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.

### 4) 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

### is acting on a body of mass m = 3.0 kg and changes its velocity from an initial

PHYS 101 second major Exam Term 102 (Zero Version) Q1. A 15.0-kg block is pulled over a rough, horizontal surface by a constant force of 70.0 N acting at an angle of 20.0 above the horizontal. The block

### The 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

### C) D) 2. The diagram below shows a worker using a rope to pull a cart.

1. Which graph best represents the relationship between the acceleration of an object falling freely near the surface of Earth and the time that it falls? 2. The diagram below shows a worker using a rope

### PHYS 1303 Final Exam Example Questions

PHYS 1303 Final Exam Example Questions 1.Which quantity can be converted from the English system to the metric system by the conversion factor 5280 mi f 12 f in 2.54 cm 1 in 1 m 100 cm 1 3600 h? s a. feet

### Forces Review. A. less than the magnitude of the rock s weight, but greater than zero A. 0 B. 45 C. 90. D. 180.

Name: ate: 1. Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the greatest magnitude?. 0 B. 45 C. 90.. 180. 5. rock is thrown straight

### Twentieth SLAPT Physics Contest Southern Illinois University Edwardsville April 30, Mechanics Test

Twentieth SLAPT Physics Contest Southern Illinois University Edwardsville April 30, 2005 Mechanics Test Please answer the following questions on the supplied answer sheet. You may write on this test booklet,

### Review: Advanced Applications of Newton's Laws

Review: Advanced Applications of Newton's Laws 1. The free-body diagram of a wagon being pulled along a horizontal surface is best represented by a. A d. D b. B e. E c. C 2. The free-body diagram of a

### ΣF=ma SECOND LAW. Make a freebody diagram for EVERY problem!

PHYSICS HOMEWORK #31 SECOND LAW ΣF=ma NEWTON S LAWS Newton s Second Law of Motion The acceleration of an object is directly proportional to the force applied, inversely proportional to the mass of the

### AP practice ch 7-8 Multiple Choice

AP practice ch 7-8 Multiple Choice 1. A spool of thread has an average radius of 1.00 cm. If the spool contains 62.8 m of thread, how many turns of thread are on the spool? "Average radius" allows us to

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) You are standing in a moving bus, facing forward, and you suddenly fall forward as the

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Common Quiz Mistakes / Practice for Final Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A ball is thrown directly upward and experiences

### Reading 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

### WS-CH-4 Motion and Force Show all your work and equations used. Isaac Newton ( )

AP PHYSICS 1 WS-CH-4 Motion and Force Show all your work and equations used. Isaac Newton (1643-1727) Isaac Newton was the greatest English mathematician of his generation. He laid the foundation for differential

### Test 7 wersja angielska

Test 7 wersja angielska 7.1A One revolution is the same as: A) 1 rad B) 57 rad C) π/2 rad D) π rad E) 2π rad 7.2A. If a wheel turns with constant angular speed then: A) each point on its rim moves with

### Chapter 8, Rotational Equilibrium and Rotational Dynamics. 3. If a net torque is applied to an object, that object will experience:

CHAPTER 8 3. If a net torque is applied to an object, that object will experience: a. a constant angular speed b. an angular acceleration c. a constant moment of inertia d. an increasing moment of inertia

### CHAPTER 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

### Physics Midterm Review KEY

Name: Date: 1. Which quantities are scalar? A. speed and work B. velocity and force C. distance and acceleration D. momentum and power 2. A 160.-kilogram space vehicle is traveling along a straight line

### PHYS 1303 Final Exam Example Questions

PHYS 1303 Final Exam Example Questions (In summer 2014 we have not covered questions 30-35,40,41) 1.Which quantity can be converted from the English system to the metric system by the conversion factor

### AP 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

### Motor. Cable. Elevator

Q4.1 An elevator is being lifted at a constant speed by a steel cable attached to an electric motor. There is no air resistance, nor is there any friction between the elevator and the walls of the elevator

### 7. 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.

### Page 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

### 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

### 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

### HATZIC SECONDARY SCHOOL

HATZIC SECONDARY SCHOOL PROVINCIAL EXAMINATION ASSIGNMENT VECTOR DYNAMICS MULTIPLE CHOICE / 45 OPEN ENDED / 75 TOTAL / 120 NAME: 1. Unless acted on by an external net force, an object will stay at rest

### (a) On the dots below that represent the students, draw and label free-body diagrams showing the forces on Student A and on Student B.

2003 B1. (15 points) A rope of negligible mass passes over a pulley of negligible mass attached to the ceiling, as shown above. One end of the rope is held by Student A of mass 70 kg, who is at rest on

### Name Date Period PROBLEM SET: ROTATIONAL DYNAMICS

Accelerated Physics Rotational Dynamics Problem Set Page 1 of 5 Name Date Period PROBLEM SET: ROTATIONAL DYNAMICS Directions: Show all work on a separate piece of paper. Box your final answer. Don t forget

### Physics 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

### Physics 2211 ABC Quiz #3 Solutions Spring 2017

Physics 2211 ABC Quiz #3 Solutions Spring 2017 I. (16 points) A block of mass m b is suspended vertically on a ideal cord that then passes through a frictionless hole and is attached to a sphere of mass

### 1 MR SAMPLE EXAM 3 FALL 2013

SAMPLE EXAM 3 FALL 013 1. A merry-go-round rotates from rest with an angular acceleration of 1.56 rad/s. How long does it take to rotate through the first rev? A) s B) 4 s C) 6 s D) 8 s E) 10 s. A wheel,

### Rotation. PHYS 101 Previous Exam Problems CHAPTER

PHYS 101 Previous Exam Problems CHAPTER 10 Rotation Rotational kinematics Rotational inertia (moment of inertia) Kinetic energy Torque Newton s 2 nd law Work, power & energy conservation 1. Assume that

### Mechanics II. Which of the following relations among the forces W, k, N, and F must be true?

Mechanics II 1. By applying a force F on a block, a person pulls a block along a rough surface at constant velocity v (see Figure below; directions, but not necessarily magnitudes, are indicated). Which

### Dynamics; 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

### Dynamics Test K/U 28 T/I 16 C 26 A 30

Name: Dynamics Test K/U 28 T/I 16 C 26 A 30 A. True/False Indicate whether the sentence or statement is true or false. 1. The normal force that acts on an object is always equal in magnitude and opposite

### Forces 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

### UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics

UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics Physics 115.3 Physics and the Universe FINAL EXAMINATION December 14, 013 NAME: (Last) Please Print (Given) Time: 3 hours STUDENT

### 5. Use the graph below to determine the displacement of the object at the end of the first seven seconds.

Name: Hour: 1. The slope of the tangent on a position-time graph equals the: Sem 1 Exam Review Advanced Physics 2015-2016 2. The area under the curve on a velocity-time graph equals the: 3. The graph below

### Exam. Name. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) You want to swim straight across a river that is 76 m wide. You find that you can do

### y(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

### r r Sample Final questions for PS 150

Sample Final questions for PS 150 1) Which of the following is an accurate statement? A) Rotating a vector about an axis passing through the tip of the vector does not change the vector. B) The magnitude

### Name: 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

### 5. Two forces are applied to a 2.0-kilogram block on a frictionless horizontal surface, as shown in the diagram below.

1. The greatest increase in the inertia of an object would be produced by increasing the A) mass of the object from 1.0 kg to 2.0 kg B) net force applied to the object from 1.0 N to 2.0 N C) time that

### PHYSICS 221, FALL 2010 EXAM #1 Solutions WEDNESDAY, SEPTEMBER 29, 2010

PHYSICS 1, FALL 010 EXAM 1 Solutions WEDNESDAY, SEPTEMBER 9, 010 Note: The unit vectors in the +x, +y, and +z directions of a right-handed Cartesian coordinate system are î, ĵ, and ˆk, respectively. In

### Written Homework problems. Spring (taken from Giancoli, 4 th edition)

Written Homework problems. Spring 014. (taken from Giancoli, 4 th edition) HW1. Ch1. 19, 47 19. Determine the conversion factor between (a) km / h and mi / h, (b) m / s and ft / s, and (c) km / h and m

### w = mg F g = τ = Frsinθ a c v f + at = v i F = ma F f p = mv W = Fd v f 2 = v i 2 + 2ad F t = Δ(mv) Impulse = F t KE = 1 2 mv 2 PE = mgh PE = 1 2 kx 2

Wissahickon Physics Midterm x = x i + vt + 1 2 at 2 v f 2 = v i 2 + 2ad Name v f = v i + at Gm 1 m 2 w = mg F g = r 2 g = 9.8m/s 2 G = 6.67 10 11 (N m 2 /k g 2 ) F = ma F f = µn τ = Frsinθ a c = v 2 p

### Physics 201, Practice Midterm Exam 3, Fall 2006

Physics 201, Practice Midterm Exam 3, Fall 2006 1. A figure skater is spinning with arms stretched out. A moment later she rapidly brings her arms close to her body, but maintains her dynamic equilibrium.

### 6. Which graph best represents the motion of an object that is not in equilibrium as it travels along a straight line? A) B)

1. The data table below lists the mass and speed of four different objects. 6. Which graph best represents the motion of an object that is not in equilibrium as it travels along a straight line? Which

### 5. The graph represents the net force acting on an object as a function of time. During which time interval is the velocity of the object constant?

1. A 0.50-kilogram cart is rolling at a speed of 0.40 meter per second. If the speed of the cart is doubled, the inertia of the cart is A) halved B) doubled C) quadrupled D) unchanged 2. A force of 25

### Chapter 8 - Rotational Dynamics and Equilibrium REVIEW

Pagpalain ka! (Good luck, in Filipino) Date Chapter 8 - Rotational Dynamics and Equilibrium REVIEW TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) When a rigid body

### The 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

### Q2. 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

### Sample Physics Placement Exam

Sample Physics 130-1 Placement Exam A. Multiple Choice Questions: 1. A cable is used to take construction equipment from the ground to the top of a tall building. During the trip up, when (if ever) is

### 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

### Phys101 Second Major-162 Zero Version Coordinator: Dr. Kunwar S. Saturday, March 25, 2017 Page: 1

Coordinator: Dr. Kunwar S. Saturday, March 25, 2017 Page: 1 Q1. Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 20 N, acting due east, and the other

### The net force on a moving object is suddenly reduced to zero. As a consequence, the object

The net force on a moving object is suddenly reduced to zero. As a consequence, the object (A) stops abruptly (B) stops during a short time interval (C) changes direction (D) continues at a constant velocity

### AP Physics 1 Review. On the axes below draw the horizontal force acting on this object as a function of time.

P Physics Review. Shown is the velocity versus time graph for an object that is moving in one dimension under the (perhaps intermittent) action of a single horizontal force. Velocity, m/s Time, s On the

### Chapter 9-10 Test Review

Chapter 9-10 Test Review Chapter Summary 9.2. The Second Condition for Equilibrium Explain torque and the factors on which it depends. Describe the role of torque in rotational mechanics. 10.1. Angular

### Exam 1 Solutions. PHY 2048 Spring 2014 Acosta, Rinzler. Note that there are several variations of some problems, indicated by choices in parentheses.

Exam 1 Solutions Note that there are several variations of some problems, indicated by choices in parentheses. Problem 1 Let vector a! = 4î + 3 ĵ and vector b! = î + 2 ĵ (or b! = î + 4 ĵ ). What is the

### Summer Physics 41 Pretest. Shorty Shorts (2 pts ea): Circle the best answer. Show work if a calculation is required.

Summer Physics 41 Pretest Name: Shorty Shorts (2 pts ea): Circle the best answer. Show work if a calculation is required. 1. An object hangs in equilibrium suspended by two identical ropes. Which rope

### F 2 = 26 N.What third force will cause the object to be in equilibrium (acceleration equals zero)?

FLEX Physical Science AP Physics C Mechanics - Midterm 1) If you set the cruise control of your car to a certain speed and take a turn, the speed of the car will remain the same. Is the car accelerating?

### (35+70) 35 g (m 1+m 2)a=m1g a = 35 a= =3.27 g 105

Coordinator: Dr. W. L-Basheer Monday, March 16, 2015 Page: 1 Q1. 70 N block and a 35 N block are connected by a massless inextendable string which is wrapped over a frictionless pulley as shown in Figure

### Circular Motion & Gravitation MC Question Database

(Questions #4,5,6,27,37,38,42 and 58 each have TWO correct answers.) 1) A record player has four coins at different distances from the center of rotation. Coin A is 1 cm away, Coin B is 2 cm away. Coin

### AP Physics II Summer Packet

Name: AP Physics II Summer Packet Date: Period: Complete this packet over the summer, it is to be turned it within the first week of school. Show all work were needed. Feel free to use additional scratch

### UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics

UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics Physics 111.6 MIDTERM TEST #2 November 15, 2001 Time: 90 minutes NAME: STUDENT NO.: (Last) Please Print (Given) LECTURE SECTION

### 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

### Physics 53 Exam 3 November 3, 2010 Dr. Alward

1. When the speed of a rear-drive car (a car that's driven forward by the rear wheels alone) is increasing on a horizontal road the direction of the frictional force on the tires is: A) forward for all

### 3) Which of the following quantities has units of a displacement? (There could be more than one correct choice.)

FLEX Physical Sciences AP Physics 1 (Honors Physics) Final Homework Exam 1) A toy rocket is launched vertically from ground level at time t = 0 s. The rocket engine provides constant upward acceleration

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

### Physics 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

### Chapter 9 TORQUE & Rotational Kinematics

Chapter 9 TORQUE & Rotational Kinematics This motionless person is in static equilibrium. The forces acting on him add up to zero. Both forces are vertical in this case. This car is in dynamic equilibrium

### On my honor, I have neither given nor received unauthorized aid on this examination.

Instructor(s): Profs. D. Reitze, H. Chan PHYSICS DEPARTMENT PHY 2053 Exam 2 April 2, 2009 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination.

### act 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,

### Dynamics-Newton's 2nd Law

1. A constant unbalanced force is applied to an object for a period of time. Which graph best represents the acceleration of the object as a function of elapsed time? 2. The diagram below shows a horizontal

### PHYS 101 Previous Exam Problems. Kinetic Energy and

PHYS 101 Previous Exam Problems CHAPTER 7 Kinetic Energy and Work Kinetic energy Work Work-energy theorem Gravitational work Work of spring forces Power 1. A single force acts on a 5.0-kg object in such

### Dynamics 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

### PHYSICS 221, FALL 2011 EXAM #2 SOLUTIONS WEDNESDAY, NOVEMBER 2, 2011

PHYSICS 1, FALL 011 EXAM SOLUTIONS WEDNESDAY, NOVEMBER, 011 Note: The unit vectors in the +x, +y, and +z directions of a right-handed Cartesian coordinate system are î, ĵ, and ˆk, respectively. In this

### Forces. 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

### Physics 121, Sections 1 and 2, Winter 2011 Instructor: Scott Bergeson Exam #3 April 16 April 21, 2011 RULES FOR THIS TEST:

Physics 121, Sections 1 and 2, Winter 2011 Instructor: Scott Bergeson Exam #3 April 16 April 21, 2011 RULES FOR THIS TEST: This test is closed book. You may use a dictionary. You may use your own calculator

### Lecture PowerPoints. Chapter 5 Physics for Scientists & Engineers, with Modern Physics, 4 th edition. Giancoli

Lecture PowerPoints Chapter 5 Physics for Scientists & Engineers, with Modern Physics, 4 th edition 2009 Pearson Education, Inc. This work is protected by United States copyright laws and is provided solely

### = 40 N. Q = 60 O m s,k

Sample Exam #2 Technical Physics Multiple Choice ( 6 Points Each ): F app = 40 N 20 kg Q = 60 O = 0 1. A 20 kg box is pulled along a frictionless floor with an applied force of 40 N. The applied force

### Newton s First Law. Newton s Second Law 9/29/11

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

### Equilibrium & Elasticity

PHYS 101 Previous Exam Problems CHAPTER 12 Equilibrium & Elasticity Static equilibrium Elasticity 1. A uniform steel bar of length 3.0 m and weight 20 N rests on two supports (A and B) at its ends. A block

### 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

### AP Physics 1 Rotational Motion Practice Test

AP Physics 1 Rotational Motion Practice Test MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A spinning ice skater on extremely smooth ice is able

### Forces & Newton s Laws FR Practice Problems

1) A drag-racing car speeds up from rest to 22 m/s in 2 s. The car has mass 800 kg; the driver has mass 80 kg. a) Calculate the acceleration of the car. b) Calculate the net force on the car. c) Which

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Diagram 1 A) B - A. B) A - B. C) A + B. D) A B.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In the diagram shown, the unknown vector is 1) Diagram 1 A) B - A. B) A - B. C) A + B.

### 24 m / s. 4. The units N / kg are used for A. net force. B. gravitational force. C. electric field strength. D. gravitational field strength.

PHYSICS 12 JUNE 2004 PROVINCIAL EXAMINATION PART A: MULTIPLE CHOICE 1. Which of the following is a scalar quantity? A. work B. force C. velocity D. momentum 2. An astronaut on the moon throws a 5.0 kg

### Exam 3 Practice Solutions

Exam 3 Practice Solutions Multiple Choice 1. A thin hoop, a solid disk, and a solid sphere, each with the same mass and radius, are at rest at the top of an inclined plane. If all three are released at

### 66 Chapter 6: FORCE AND MOTION II

Chapter 6: FORCE AND MOTION II 1 A brick slides on a horizontal surface Which of the following will increase the magnitude of the frictional force on it? A Putting a second brick on top B Decreasing the

### End-of-Chapter Exercises

End-of-Chapter Exercises Exercises 1 12 are conceptual questions that are designed to see if you have understood the main concepts of the chapter. 1. Figure 11.21 shows four different cases involving a

### Unit 6: Forces II PRACTICE PROBLEMS

Regents Physics Mrs. Long Unit 6: Forces II PRACTICE PROBLEMS Essential Understanding for the Unit: The net force can be determined by using force diagrams in order to show all forces acting, and thereby