| Term | Definition |
|---|
| Work | quantity of energy transfered by a force when it is applied to a body and causes that body to move in the direction of the force |
| w=f*d | Fomula for work work equals force multiplied by distance |
| joule | SI unit of measure for work |
| power | a quantity that measures the rate at ehich work is done |
| mechanical advantage | a quanitity that measures how much a machine multiplies force or distance |
| simple machine | one of the six basic types of machines of which all ohter machines are composed |
| compound machine | a machine made of more than one simple machines |
| kinetic energy | the energy of a moving object due to its motion |
| mechanical energy | the sum of the kinetic and potential energy of a large-scale objects in a system |
| poetential energy | the stored energy resulting from the relative position of objects in a system |
| efficiency | a quantity, usually expressed as a percentage, that measures the ration of useful work output to work input |
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