17.1 Intro to Energy

A leaf hanging motionless on a tree has

• no energy.

• elastic energy.

• kinetic energy.

• potential energy.

When a moving bat hits a ball, what happens to the kinetic energy of the bat?

• All of it becomes potential energy.

• Most of it is transferred to the ball.

• All of it is used up and gone.

• Most of it changes to heat.

Energy is converted from kinetic energy to potential energy when you

• ski down a hill.

• climb a mountain.

• run around a level track.

• two of the above

The atoms of matter have kinetic energy.

• True

• False

An object’s velocity affects its kinetic energy more than its mass does.

• True

• False

A heavier object has less gravitational potential energy than a lighter object at the same height.

• True

• False

Compressing a spring gives it potential energy.

• True

• False

Energy conversions cannot be reversed.

• True

• False

__________ can be defined as the ability to do work.

• energy

• conversion

• kinetic

• potential

The process in which energy changes form is called energy __________.

• energy

• conversion

• kinetic

• potential