| A | B |
| reference point | a place or object used for comparison to determine if something is moving |
| velocity | is speed in a given direction |
| rate | change in position over time |
| speed | rate of change over in a position |
| instantaneous speed | rate of speed at a given instant |
| constant speed | a speed that does not vary, not very common |
| average speed | total distance covered by total time |
| motion | is the change in an objects position |
| units for speed | distance divided by time |
| symbol for distance | meters |
| symbol for time | seconds |