PS:3.3:Acceleration

Acceleration occurs only when there is a change in speed

• true

• false

It is easier to calculate acceleration when both speed and direction are changing

• true

• false

The y-axis of a velocity-time graph represents distance traveled.

• true

• false

If a velocity-time graph slopes downward to the right, then acceleration is negative

• true

• false

If velocity is not changing, then acceleration is zero

• true

• false

A change in direction with or without a change in speed is velocity

• true

• false

If the slope of a velocity-time graph is a straight line, then velocity must be constant.

• true

• false

Acceleration shows

• how quickly an object travels.

• the direction in which an object moves

• how far an object travels in a given time

• how quickly an object’s velocity changes.

Which of the following is an example of acceleration?

• a change in direction

• an increase in speed

• a decrease in speed

• all of the above

If you are riding in a car that decelerates suddenly, you will feel your body

• pressed backward

• pushed to the side

• thrust forward