If an object is thrown or swung, it will not return to the original position as
the starting energy will be transferred and will not have enough energy to
return to the original position, e.g.: A bungee jumper will start with
Gravitational Potential Energy but as they jump, the energy will be
transferred into kinetic energy, and will therefore not return to the original
position.
Equations
W = F x d
Work done = Force x distance
Gravitational Potential
Ep = m x g x h
Elastic Potential = mass x gravitational field strength x height
Ep = w x h
Elastic Potential = weight x height
Ek = 1/2 x m x (v x v)
Kinetic Energy = 1/2 x mass x (velocity x velocity)