Chemistry

Kathy Cervantes

25 January, 17:48

Which best describes Alana's error?

Alana summarized what happens when a ball sitting on top

of a grassy hill rolls down the hill.

The motionless ball has potential energy. Once the ball

starts to roll down the hill, new kinetic energy is made. As

the ball rolls across the grass, it slows down. The kinetic

energy of the ball is converted to other forms of energy.

The motionless ball does not have energy because it is

still.

Kinetic energy is not made; it is a result of energy

transformation

The ball cannot slow down unless someone touches it.

The energy is not converted; it disappears.