The diagram shows a wooden racetrack with 500-g car positioned at the top of a slope. Which energy conversion takes place as the car rolls down the track?
The energy conversion that takes place as the car rolls down the track is from potential energy to kinetic energy.
When the car is at the top of the slope, it has gravitational potential energy due to its height above the ground. As the car rolls down the slope, this potential energy is converted into kinetic energy, which is the energy of motion. The car gains speed and kinetic energy as it goes down the slope, while losing potential energy.