| A | B |
|---|
| relative motion | motion that is described based on a frame of reference |
| motion | any change of position |
| acceleration | change in the speed or direction of an object's mtion |
| position | describes a certain place |
| gravity | force that pulls all objects toward each other |
| force | any push or pull |
| newton | metric unit of force |
| frame of reference | things around you that you use to describe motion |
| speed | measure of an object's change of position during a unit of time |
| weight | measure of the force of gravity on an object |
| friction | force that keeps twoobjects that are touching from easily sliding past each other |
