Conservation of Energy

Potential Energy: This is stored energy due to position, shape, or state. For example, water behind a dam has potential gravitational energy because it could flow down if released.

Kinetic Energy: This is the type of mechanical work done by an object due to its motion. For instance, moving car possesses kinetic energy because it's in motion.

Thermodynamics: Thermodynamics studies heat transfer and conversion among different forms of energies including potential and kinetic energies.