Vocabulary
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| done only when force causes a change in the position or the motion of an object in the dirction of the applied force. | work | ||||
| the rate at which work is done, that is, how much work id done in a given amount of time. | power | ||||
| defined as the ratio between the output force and the input force. | mechanical advantage | ||||
| one of the six basic types of machines, which are the basis for all other forms of machines. | simple machines | ||||
| combines two or more simple machines. | compound machines | ||||
| results from the relative positions of objects in a system. | potential energy | ||||
| the energy that an object has because it is in motion. | kinetic energy | ||||
| the sum of the potential energy and kinetic energy in a system. | mechanical energy | ||||
| defined as the ratio of useful work output to total work input. | efficency |
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Created by:
kimberlyatchley
on 2012-02-27