| A | B |
|---|
| work | a quantity that measures the effects of a force acting over a distance |
| power | a quantity that measures the rate at which work is done. |
| mechanical advantage | a quantity that measures how much a machine multiplies force or distance. |
| simple machine | one of the six basic types of machines of which all other machines are composed |
| compound machine | a machine made of more than one simple machine. |
| potential energy | the stored energy resulting from the relative positions of objects in a system. |
| mechanical energy | the sum of the kinetic and potential energy of large-scale objects in a system |
| kinetic energy | the energy of a moving object due to its motion. |
| efficiency | a quantity, usually expressed as a percentage, that measures the ratio of useful work output to work input |
