| A | B |
|---|
| motion | change in position |
| position | location of an object |
| inertia | resistance to a change in motion |
| force | push or pull |
| speed | how fast an object changes position speed=distance/time |
| velocity | speed in a certain direction |
| acceleration | rate of change in velocity |
| balanced force | forces equal in size and opposite in direction |
| unbalanced force | forces not equal in size or are not in opposite directions |
| friciton | force that resists motion between 2 surfaces that are touching |
