| A | B |
|---|
| Work | a transfer of energy that occurs when a force makes an object move |
| power | the amount of work done in one second. The rate at which work is done. |
| machine | device that makes doing work easier |
| input force | the force applied to the machine |
| output force | the force applied by the machine |
| mechanical advantage | the ratio of the output force to the input force |
| efficiency | a measure of how much of the work put into a machine is changed into useful output work by the machine |
| simple machine | a machine that does work with only one movement of the machine. |
