| A | B |
|---|
| magnetism | a measure of repulsion (pushing away) or attraction (pulling toward) between poles of magnets |
| Work | Use of force to move an object through a distance |
| Force | any push or pull that causes objects to move, stop or change direction |
| Gravitation | force that acts to pull one object in the universe toward another |
| Power | Amount of work for each unit of time. measure of how quickly someone or something does work. |
| Machine | something that makes work seem easier by changing the size or direction of force |
| Acceleration | change of motion when an unbalanced force acts on an object, it either speeds up, slows down or changes direction. |
| Friction | the force that opposes or acts against motion when two surfaces rub against each other |
| Less Friction | smoother the two surfaces act against each other |
| More Friction | rougher the two surfaces act against each other |
| Balanced force | equal in size and opposite in direction |
| Unbalanced force | occurs when one force is greater than its opposite force |
| Net Force | A value given when either adding or subtracting the individual forces . |
