Question

What happens when a roller coaster car moves down from the top of a hill?

A.Potential energy is transformed into electrical energy.
B.Potential energy is transformed into only kinetic energy.
C.Kinetic energy is transformed into electrical energy.
D.Kinetic energy is transformed into potential and thermal energy.
E.Potential energy is transformed into kinetic and thermal energy.

Answer 1

I would say B.

Potential energy is energy stored in body or system: the energy that a body or system has stored because of its position in an electric, magnetic, or gravitational field, or because of its configuration. Kinetic energy is energy of body caused by motion: the energy that a body or system has because of its motion.