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.

A) Increase the height at point A.

Explanation:

As we know that Kinetic Energy (1/2 mv^2) of a body is also dependent on it's potential energy and vice versa. So, when the roller coaster is moving, increasing the height at initial point will increase the Potential Energy (P.E = mgh) of the roller coaster and when it leaves the point A, it has more velocity and as we can guess from the equation eventually more Kinetic Energy.