Understanding Motion and Acceleration

Movement is best described as:

• A change in color

• A change in chemistry

• A change in speed

• A change in position

An object traveling in a circular path is accelerating because its _____.

• mass changes

• direction changes

• speed changes

• momentum changes

A car travels in a straight line with a constant velocity of 30 m/s for 10 seconds. How far does the car travel during this time?

• 150 m

• 300 m

• 600 m

• 1200 m

A car travels a distance of 150 kilometers at a constant speed of 75 kilometers per hour. How long does it take for the car to cover this distance?

• 1.5 hours

• 2 hours

• 2.5 hours

• 3 hours

As you brake your bicycle, your velocity changes from 20 m/s east to 10 m/s east in 5 seconds. What is your acceleration?

• 10 m/s² west

• 2 m/s² east

• 10 m/s² east

• 2 m/s² west

A frog is sitting still on its toadstool for 20 minutes without moving. What would a distance-time graph look like for his motion?

• A straight line with a positive slope

• A straight line with a negative slope

• A horizontal line

• A vertical line

• 5 m/s

• 10 m/s

• 15 m/s

• 20 m/s

• 11.5 m

• 15.0 m

• 18.5 m

• 22.5 m