What happens to motion energy when Raymond slows down on his skateboard?

When Raymond slows down on his skateboard, the majority of motion energy, also known as kinetic energy, is converted into thermal energy due to friction. As Raymond moves, the interaction between the skateboard wheels and the surface generates frictional forces, which convert kinetic energy into heat. This transformation is a common principle in physics, where energy is conserved but changes forms.

As he brakes or encounters resistance, the kinetic energy diminishes, and this lost energy is not simply disappearing but is instead dissipated as heat. Thus, while some energy could also be stored temporarily in the skateboard's mechanical parts or in the muscles used for braking, the predominant effect when slowing down is the conversion of motion energy into thermal energy. This process highlights the concept of energy transformation and conservation in real-world scenarios.