| A | B |
|---|
| position | certain place |
| motion | change of position |
| frame of reference | surroundings help identify motion |
| relative motion | motion based on frame/reference |
| speed | measure of motion/distance/time |
| force | push or pull |
| acceleration | change in speed or direction |
| newton | metric unit of force |
| gravity | force that pulls towards object |
| weight | measure of force of gravity |
