Quantities| Distance travelled | s | metres (m) |
| Time taken | t | seconds (s) |
| Time taken | t | seconds (s) |
| Velocity at the start (initial velocity) | u | metres/second (m/s) |
| Velocity at the end (final velocity) | v | metres/second (m/s) |
| Acceleration | a | metres/seconds (m/s2) |
| 1. Motion with constant velocity | ||
| Distance (s) = velocity (u or v) x time (t) | s = vt | |
| 2. Accelerated motion | ||
| Acceleration (a) = [change in velocity]/time | a = [v-u]/t | |
| Another version: | v = u + at | |
| s = ut + ½ at2 | v2 = u2 + 2as | |
| Accelerated motion with zero initial velocity | s = ½ at2 | v2 = 2as |