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ps ch4
Vocab.
Term | Definition |
---|---|
Kinetic energy | energy a moving object has because of its motion depends on the mass and speed of the object. |
joule | SI unit of energy. |
potential energy | stored energy an object has due to its position. |
elastic potential energy | energy stored when an object is compressed or stretched. |
chemical potential energy | energy stored in chemical bonds. |
Gravitational potential energy | energy stored by objects due to their position above earth's surface depends on the distance above earths surface and the objects mass |
Mechanical energy | sum of the potential energy and kinetic energy in a system. |
law of conservation of energy | states that energy can never be created or destroyed. |