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abstraction > mathematical concept > number > quantity > energy > potential energy

potential energy
subject			fact

potential energy	is a kind of energy
energy	has unit energy unit
number	has value

Kinds of potential energy :

• gravitational potential energy (3 facts) - Energy that a body can acquire by falling through a gravitational field and that decreases as the kinetic energy increases. There is no general reference level (analogous to the state of rest of a body in defining kinetic energy), and so we customarily define the change in gravitational potential energy as the negative of the work done by the gravitational forces during the bodys change of position., When we lift a weight from the floor to a tabletop, we clearly put energy into it. The energy is not lost, however, because we can retrieve it by allowing the weight to fall back to the floor. While the weight is on the table, we say that the energy is stored as gravitational potential energy. The energy is stored in the gravitational field.