A person is riding a skateboard on a U-shaped ramp. At which point does a person have the greatest potential energy?
1. on the first part of the ramp as the person is moving down the side.
2. At the top of the ramp, before they begin moving down into the ramp.
3. In the middle of the ramp is at its lowest point in the ramp.
4. On the side of the ramp as a person is coming back.
2. At the top of the ramp, before they begin moving down into the ramp.
At the top of the ramp, the person has the highest elevation from the ground and therefore the greatest potential energy. As they begin to move down into the ramp, their potential energy decreases and is converted into kinetic energy.