Energy Quiz Review

If Nellie Newton pushes an object with twice the force for twice the distance, she does:

• The same work
• Twice the work
• Four times the work
• Eight times the work

If Skelly the Skater's speed is is increased so he has twice the momentum, then his kinetic energy is increased by: 

• Two
• Four
• Eight
• Zero

How much power is expended if you lift a 50-N rock 10 meters in 1 second?

• 500 W
• 50 W
• 10 W
• 5 W

If you lift one load up two stories, how much work do you do compared to lifting one load up only one story?

• Four times as much
• Twice as much
• The same amount
• One half as much

True or False: More power is needed to carry a heavy suitcase slowly up a flight of stairs than to carry the same suitcase quickly up the same flight of stairs.

• True
• False

An object that has kinetic energy must be:

• Moving
• Falling
• Elevated
• At rest

Tags

NGSS.HS-PS3-2

True or false: The ratio of output force to input force for a simple machine is called its efficiency.

• True
• False

True or false: the energy an object has by virtue of its motion is called its kinetic energy.

• True
• False

True or false: the rate at which work is done is called power.

• True
• False

True or false: The energy an object has by virtue of it location is called potential energy.

• True
• False