| A | B |
| gravity | force of attraction between any two objects in the universe |
| friction | force which opposes motion |
| force | a push or a pull |
| inertia | thwe tendency to resist any change in motion. |
| Newton's First Law | Law of inertia |
| Newton's Second Law | F=M.A |
| Newton's Third Law | For every action force there is an equal and opposite reaction force |
| work | force times the distance through which the force acts |
| power | The rate at which work is done |
| Watt | The unit used for power |
| Joule | The unit used to measure work |
| Newton-meter | Joule |
| one newton-meter per second | Watt |