Work and Energy Test

What happens to the kinetic energy of a moving car if you double the velocity of the car?

• It increases by 4 times

• It increases by 2 times

• It decreases by 4 times

• It decreases by 2 times

When energy in a system is transformed, what happens to the total amount of energy in the system?

• It increases

• It decreases

• It stays the same

• It goes to zero

Nellie lifts 2 books up 2 meters in 2 seconds. Billy lifts 2 identical book up 2 meters in 4 seconds. Who did more work?

• Nellie did more work

• Billy did more work

• They both did the same amount of work

• Neither of them did work

Energy due to motion is called __________ energy.

• Kinetic

• Potential

• Chemical

• Power

Energy due to an object's position is called __________ energy.

• Kinetic

• Potential

• Chemical

• Power

At which point does the ball have maximum gravitational potential energy?

• A

• B

• D

• G

At what point does the ball have maximum kinetic energy?

• A

• B

• D

• G

A 60 N block at rest at the bottom of a frictionless ramp is pushed up the incline. How much potential energy does the block gain?

• 0 J

• 20 J

• 60 J

• 180 J

Jasmine, who weighs 400 newtons, moves up a 5.0 meter climbing wall in 15 seconds. The amount of power generated by Jasmine as she climbs the wall is about ____ watts.

• 133

• 2000

• 6000

• 30000

What is the kinetic energy of a go-cart with a mass of 150 kilograms and a speed of 20 m/s?

• 1500

• 3000

• 30000

• 60000