College Physics

Alan Giambattista Betty RichardsonRobert Richardson4th edition

Chapter 3

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Question 1

Does the displacement of an object depend on the specific location of the origin of the

coordinate system?

A) Yes

B) No

Question 2

Ben leaves his home and walks to the bank, then to the park. What is the distance that

Ben has walked?

A) 2 blocks

B) 3 blocks

C) 5 blocks

D) 7 blocks

Question 3

Ben leaves his home and walks to the bank, then to the park. What is his final displacement?

A) 2 blocks east

B) 3 blocks east

C) 5 blocks east

D) 7 blocks east

Question 4

Which of the following is a complete description of the position of the public library?

A) 3 blocks west

B) west of the town square

C) 3 blocks west of the town square

D) 3 blocks away from the town square

E) all of the above

Question 5

The graph of position vs. time is given for a train. What can you say about the train's

motion from time t1 to time t2?

A) It is moving with constant velocity.

B) It is not moving.

C) It is moving with a constant negative velocity.

D) It is accelerating.

Question 6

The graph for position vs. time is given at right for a car. What can you say about the velocity of the car over time?

A) It speeds up all the time

B) It slows down all the time

C) It moves at constant velocity

D) Sometimes it speeds up and sometimes it slows

E) not really sure

Question 7

Which represents v vs. t for a dropped ball bouncing back up?

A) B)

C) D)

Question 8

In which of these v vs. t graphs is the acceleration changing?

A) a

B) b

C) c

D) d

Question 9

If the average velocity is non-zero over a time interval, does this mean that the

instantaneous velocity is never zero over that same time interval?

A) Yes

B) No

Question 10

If the velocity of an object is non-zero, can the acceleration of the object be zero?

A) Yes

B) No

Question 11

When throwing a ball straight up, which of the following correctly describes the acceleration vector at the highest point in its path?

A) The acceleration vector points down.

B) The acceleration vector points up.

C) There is no acceleration.

Question 12

In which of the following cases is the acceleration zero?A) A car increases its speed from 0 mph to 30 mph.B) A car decreases its speed from 15 mph to 5 mph.C) A car goes around a curve at a speed of 30 mph.D) A car backs out of a drive at 10 mph.

Question 13

You are bicycling to the grocery store. As you reach your destination and prepare to stop,

which of the following statements is true?

A) Your velocity is forward and the acceleration is backward.

B) Your velocity and acceleration are both forward.

C) Your velocity and acceleration are both backward.

D) Your velocity is backward and your acceleration is forward.

A constant force is acting on an object. Which of these graphs best represents the velocity of the object?

A) B) C)

Question 14

Question 15

Two blocks of mass m1 and m2 are connected by

strings and pulled with constant

acceleration a. What is the relationship between the tension in each of the strings?

A) T1 > T2

B) T1 < T2

C) T1 = T2

D) T1 = T2 = 0

Question 16

A force F acts on block 1 with mass m and block 2 with mass 2m. Which graph correctly represents the accelerations of the blocks?

A) B) C)

Question 17

A single force is acting on an object. Which type of motion is not physically allowed?

A) the object speeds up

B) the object is at rest

C) the object slows down

D) the object's motion changes direction

Question 18

A wrench has a mass of 0.75 kg here on earth. It is shipped up to be used on theInternational Space Station. An astronaut on the Space Station will measure its mass to beA) 0 kg.B) 7.5 N.C) 1.7 lbs.D) 0.75 kg.

Question 19

As a train travels with a speed vTG = 15.5 m/s,

Wanda walks toward the front of the train

with a speed vWT = 1.2 m/s. What is her

speed relative to the ground?

A) 0 m/s

B) 16.7 m/s

C) 14.3 m/s

D) impossible to tell

Question 20

You are watching a parade when a float goes by with speed vf where a child is throwing darts

at a target at the back of the float with speed vd. You measure the speed of the darts to be

A) vd

B) vf

C) vd + vf

D) vd - vf

Answer Key – Chapter 3

1. B2. D3. B4. C5. B6. B7. C8. C9. B10. A

11. A12. B13. A14. B15. B16. C17. B18. D19. B20. D