Potential energy: When a truck is at rest but at an elevated position, such as on a hill, it has potential energy due to its position. The higher the elevation, the greater the potential energy.
Thermal energy: The engine, brakes, and other components of a truck generate heat when they're in use. This heat is a form of thermal energy.
Chemical energy: Diesel or gasoline, the fuel used by trucks, contains chemical energy. When combusted in the engine, the chemical energy converts into other forms of energy, such as kinetic energy.
