cH. 9 part c

Question 1

speed, distance, velocity, acceleration

Henry usually runs about 7.5 mi/hr this shows?

Answer 1

speed

Question 2

speed, distance, velocity, acceleration

On the day of the race, Henry ran along the track toward the east at 7.5 mi/hr this shows?

Answer 2

velocity

Question 3

speed, distance, velocity, acceleration

the runner at the front of the race suddenly stumbled over a piece of gravel. His speed slowed this shows?

Answer 3

acceleration

Question 4

speed, distance, velocity, acceleration

Henry increased his speed, passed the runner and won the race shows?

Answer 4

acceleration

Question 5

___ is the ability to make something move.

a. mechanical energy
b. chemical energy
c. motion
d. inertia

Answer 5

a. mechanical energy

Question 6

a fixed unmoving object or location is ___

a. potential energy
b. a joule
c. a reference point
d. effort force

Answer 6

c. a reference point

Question 7

____ is the change of an object’s position.

a. kinetic energy
b. motion
c. speed
d. resistance

Answer 7

b. motion

Question 8

the ____ of an object is determined by its mass and velocity.

a. inertia
b. effort force
c. momentum
d. stored energy

Answer 8

c. momentum

Question 9

___ occurs whenever an object speeds up, slows down, or changes direction.

a. momentum
b. inertia
c. friction
d. acceleration

Answer 9

d. acceleration

Question 10

The resistance to a change in motion is called ____

a. inertia
b. friction
c. effort force
d. velocity

Answer 10

a. inertia

Question 11

What effect does gravity work against inertia?

Answer 11

Gravity keeps an object moving forever in a straight line.