Question

A ball drops from a height, bounces three times, and then rolls to a stop when it reaches the ground the fourth time.
* At what point is it's potential energy the greatest?
* At what point does it have zero kinetic energy?
* At what point did it have maximum kinetic energy?

Answer 1

I hope I understand this right, I think the answer is
*the potential energy is highest when the ball is at it's maximum height.
* when the ball is at it's maximum height, the potential energy is at it's greatest and the kinetic energy is zero. Because the ball isn't moving.
*The kinetic energy is greatest at the ground level, and the potential energy is zero.
I just do not know if I completely understand this.