| A | B |
|---|
| motion | an objects change in position relative to a reference point |
| acceleration | the rate at which velocity changes over time |
| speed | the distance traveled by an object divided by the time interval during which the motion occured |
| velocity | the speed of an object in a particular direction |
| force | an action exerted on a body in order to change the body's state of rest or motion |
| displacement | the change in position of an object |
| friction | a force that opposes motion between two surfaces that are in contact. |
| instantaneous speed | speed of an object at one instant of time |
