Question

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:

Step1: Recall energy - conservation principle

Total mechanical energy \(E = K+U\) (kinetic energy \(K\) and potential energy \(U = mgh\)).

Step2: Analyze the relationship between potential and kinetic energy

To increase kinetic energy \(K\) at a later - stage, we need to increase the total mechanical energy at the start. Increasing the height at the starting - point (point A) increases the initial potential energy \(U = mgh\). As the roller - coaster moves, this potential energy is converted into kinetic energy.

Answer:

A. Increase the height at point A