A moving skateboard has energy because it possesses kinetic energy, which is the energy an object has due to its motion. When a skateboard is in motion, it also has mechanical energy, which is the sum of its kinetic and potential energy. This energy allows it to do work and is conserved as it moves, transforming between kinetic and potential forms depending on its motion and position (e.g., moving across the ground or going down a ramp).
The presence of kinetic energy in the moving skateboard is why it can continue traveling until forces like friction slow it down. This energy is a fundamental consequence of the skateboard's velocity and mass, following basic physics principles.