Ch. 4 Review Game

• Fun in B206!• Pick up Study Guide!

Speed that does not change is called:

• A. average speed.  

• B. constant speed.

• C. instant speed.

• D. minimum speed.

2

Displacement vectors of 5 km south, 3 km north, 1 km south, and 2 km north combine to a total displacement of

• A. 1 S

• B. 2 S

• C. 3 S

• D. 4 S

3

Variables like velocity and acceleration that have both size and direction are called:

• a. vectors.

• b. dependent.

• c. axes.

• d. independent.

4

Speed is the ratio of the distance an object moves to

• A. the time needed to travel.

• B. the direction the object moves.

• C. the displacement of the object.

• D. the motion of the object.

5

What is the slope of a line on a distance-time graph?

• A. distance.

• B. time.

• C. speed.

• D. displacement.

6

A horizontal line on a distance-time graph means the object is

• A. moving at a constant speed.

• B. moving faster.

• C. slowing down.

• D. at rest.

7

The gain in speed each second for a freely falling object is about

• A. about 0 m/s.

• B. about 5 m/s.

• C. about 10 m/s.

• D. depends on the initial speed.

8

The rate at which velocity changes is called

• A. acceleration.

• B. motion.

• C. vectors.

• D. speed.

9

A car approaching a school changes speed from 10 m/s to 5 m/s in 5 s. How can the car’s acceleration be described?

• A. The acceleration is positive

• B. It is not accelerating.

• C. It will come to rest in 5 seconds.

• D. The acceleration is negative.

10

An object that is accelerating may be

• A. slowing down.

• B. gaining speed.

• C. changing direction.

• D. all of the above

11

A freely falling objects speed is

• a. constant.

• b. increasing.

• c. decreasing.

• d. directional.

12

After starting from rest, a freely falling object accelerates at a

• a. constant rate.

• b. increasing rate.

• c. decreasing rate.

• d. changing rate.

13

Which of the following is a projectile?

• A. A book sliding across a desk.

• B. A golf ball rolling across a green.

• C. A soccer ball kicked into the air.

• D. A dog in a tree.

14

What is happening at point A in this speed vs. time graph?

• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed• .

15

AB

C

What is happening at point B in this speed vs. time graph?

• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed.

16

A

B

C

What is happening at point C in this speed vs. time graph?

• a. Positive acceleration • b. Zero acceleration • c. Negative acceleration • d. Constant speed

17

A

B

C

What is the slope of this position vs. time graph?

• a. 5 m/s

• b. 50 m/s

• c. 500 m/s

• d. 50 m

18

What is the acceleration of a lawn mower that starts at a speed of 4 m/s and speeds up to 10 m/s in 3 minutes?

• A. 3 m/min

• B. 2 m/min

• C. -2 m/min

• D. 6 m/min

19

What distance can a car go in 60 seconds if it’s speed is 3 meters per second?

• A. 12 meters

• B. 0.05 meters

• C. 120 meters

• D. 20 meters

20

How long does it take a person to get to school (5 miles away) if they travel at 35 mph?

• A. 0.5 hours

• B. 7 hours

• C. 175 hours

• D. 0.14 hours

21

What is the initial velocity of a scooter if it has a final velocity of 6 m/hr after 2 hours and they accelerate at 1.5 m/hr/s

• A. 1 m/hr• B. 2 m/hr• C. 3 m/hr• D. 4 m/hr

22