<human>:  Explain the difference between kinetic energy and potential energy.
<bot>: Kinetic energy is the energy of an object in motion. It is the amount of work an object can do when it is in motion due to its mass and velocity. Potential energy, on the other hand, is the energy possessed by an object as a result of its position relative to its surroundings. This energy is stored energy and can be released when a force acts upon the object. For example, a roller coaster has a lot of potential energy at the top of a hill, which is released as it moves downhill.