What type of energy does a skateboarder have at the top of a tall ramp?

The skateboarder at the top of the ramp has potential energy only. This is because potential energy is the energy stored in an object due to its height in a gravitational field. At the top of the ramp, the skateboarder is not moving, which means they do not have kinetic energy. Kinetic energy is the energy of motion, and since the skateboarder is standing still, their kinetic energy is zero. Once the skateboarder begins to move down the ramp, that potential energy will convert into kinetic energy as they accelerate.