Law-of-conservation-of-energy meaning

The definition of law of conservation of energy is a law stating energy cannot be created or destroyed; but, it can be changed or transferred.

An example of the law of conservation of energy is the energy from a cue ball in the game of pool being transferred to the ball it hits.

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(physics) The law stating that the total amount of energy in any isolated system remains constant, and cannot be created or destroyed, although it may change forms.
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