Question

When the motor has finished pulling the roller coaster car to the top of the very first hill, what moves the car down the hill?

1. Inertia
2. friction
3. mass
4. gravity

Answer 1

The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy.

Answer 2

Gravity

Step-by-step explanation:

Gravity is pulling down the car from falling or flying off.