| A | B |
| position | the coordinate along the motion line as measured from a chosen origin in a chosen direction |
| displacement | the change in position because of movement |
| velocity | the rate at which position is changing |
| average velocity | the displacement divided by the time taken |
| instantaneous velocity | the rate at which position is changing at each instant of time |
| acceleration | the rate at which velocity is changing |
| average acceleration | the change in velocity due to a motion divided by the time taken |
| instantaneous acceleration | the rate at which velocity is changing at each instant of timeinst |