The diagram shows a wooden racetrack with a 500-g car positioned at the top of a slope.
Which energy conversion takes place as the car rolls down the track?
a
Kinetic energy is converted to potential energy.
b
Kinetic energy is converted to electrical energy.
c
Potential energy is converted to kinetic energy.
d
Potential energy is converted to electrical energy.
c
Potential energy is converted to kinetic energy.