Chapter 2

A speedometer shows the average velocity of a car.

• True

• False

Acceleration can never be negative.

• True

• False

The relationship s=d/t can be used to calculate speed, distance or time.

• True

• False

A change is position is called ______________.

• meters

• Speed

• Velocity

• motion

If you ride your bike down a hill, then ride up the other side, your acceleration is ________.

• first positive then negative

• all positive

• first negative then positive

• all negative

A merry-go-round horse moves at a constant speed but at a changing________?

• velocity

• force

• unbalanced force

• balanced force

The momentum of a 5,000-kg truck that is standing still is greater than the momentum of 3,000-kg that is also at rest.

• True

• False

When you run around a track at constant speed of 5 km/h, your velocity changes.

• True

• False

If a car has traveled 60 km in 3 hours, what is its average speed?

• 63 km/hr

• 20 km/hr

• 57 km/hr

• 24 km/hr

A horizontal line on a velocity/time graph shows ____________ acceleration.

• positive

• zero

• negative

• changing