1 A farewell or final appearance, action, or work. 2  The beautiful legendary song sung only once by a swan in its lifetime, as it is dying.
A person converts chemical potential energy into kinetic/mechanical energy when he walks. The chemical potential energy usually takes the form of adenine triphosphate (ATP) st â¦ ored in the body.
The definition of mechanical energy is power that an object gets from its position and motion. 1  An example of mechanical energy is the power of a football flying through the air. 2  An example of mechanical energy is a wrecking ball that is swung backwards away from a building.