Question

consider the roller coaster on the track. if you want to increase the kinetic energy of the roller coaster as it proceeds through the course, what is the first thing you should do?
a increase the height at point a.
b decrease the height at point a.
c increase the height at point b.
d decrease the height at point b.

Explanation:

Kinetic energy of the roller coaster comes from converting gravitational potential energy at the starting point (Point A). Gravitational potential energy is given by $PE = mgh$, where $m$ is mass, $g$ is acceleration due to gravity, and $h$ is height. Increasing the height at Point A increases the initial potential energy, which converts to more kinetic energy as the coaster moves along the track.

Answer:

A. Increase the height at point A.