What is the starting and finishing energy of a motorcyclist braking to a halt?

The starting energy of a motorcyclist in motion is primarily kinetic energy, which depends on the motorcycle's mass and its speed. As the motorcyclist brakes to a halt, this kinetic energy is converted into thermal energy due to friction between the brake pads and the wheels, as well as air resistance. The finishing energy, when the motorcyclist comes to a complete stop, is effectively zero since both kinetic and potential energy are no longer present.