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ps ch4 vocab CM
sections 1&2
| Question | Answer |
|---|---|
| energy a moving object ha because of its motion; depends on the mass speed of the object. | kinetic energy |
| SI unit of energy | joule |
| stored energy an object has due to its position | potential energy |
| energy stored when an object is compressed or stretched. | elastic potential energy |
| energy stored in chemical bonds. | chemical potential energy |
| energy stored by objects due to there position above the earths surface depends on the distance above earths surface and the objects | gravitational potential energy |
| Sum of the potential energy and kinetic energy in a system. | mechanical energy |
| States that energy can never be created or destroyed. | law of conservation of energy |
| Device that makes doing work easier by increasing the force applied to an object changing the direction of an applied force or increasing the distance over which a force or increasing the distance over which a force can be applied. | Machine |
| The force that is applied to the machine is called the input force. | input force |
| The force applied by the machine is called the output force. | output force |
| Ration of the input force exerted by a machine to the input force applied to the machine. | mechanical advantage |
| Ratio of the output work done by the machine to the input work done on the machine. | efficiency |
Created by:
alonzo15
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