Hello PF. I have a question on a concept of Potential and Kinetic energy. So for this lets take a ramp and a ball at the bottom. If I apply a force on the ball to make it go up the ramp, when it starts to move it will gain kinetic and potential gravitational ( I think ) but what about at the very top. Will it just be gravitational-potential? Also at the ground before a force is applied, does it have any energy, thanks!