Work is the process by which energy is transformed from one form to another. Two essential factors for doing work: the force acting on the object and the distance the object passes in the direction of the force. The definition of classical mechanics: When a force acts on an object and the object passes a distance in the direction of the force, the mechanics say that the force does work on the object.

Do work: W=Fd

Force: F=W/s

Distance: s=W/F