Question

when a roller coaster’s brakes engage to slow a roller coaster cart to a stop, the brakes apply a pressure on the roller coaster track. in this situation, energy is being ____ when the roller coaster’s brakes ____ on the roller coaster track.
which choice below correctly completes the sentence?

• destroyed, increase friction
• transferred, exert a force
• created, reduce friction
• destroyed, exert a force

Explanation:

Energy cannot be created or destroyed (law of conservation of energy), so "created" and "destroyed" are incorrect. Brakes apply pressure (a force) on the track, transferring kinetic energy to thermal energy via friction.

Answer:

transferred, exert a force