We will carry out a video analysis of the motion of a model roller coaster using Capstone.

A toy cart is released from rest at the top of the first hill. We determine the kinetic energy, gravitational potential energy, and total mechanical energy from the starting point at the top of the first hill to where the cart comes to a stop.

Explain why the height of the cart and the speed of the cart cannot be compared directly, but kinetic energy and gravitation potential energy can.