| A | B |
|---|
| Frame of reference | The background used when comparing movements of objects. |
| Most common frame of reference. | The earth. |
| Stationary | Not moving. |
| Motion | Changing position over a length of time. |
| Speed | How fast an object moves, or changes its position. |
| Constant speed | Speed that stays the same, does not change. |
| Average speed | Speed that changes over time. |
| Velocity | An object's speed and direction. |
| Acceleration | How fast the velocity is changing. |
| Deceleration | Acceleration of the negative kind, slowing down. |
| Circular motion | Motion that is always accelerating, because of changing direction. |
| Momentum formula | M = mass x velocity |
| Speed formula | S = distance/time |
| Conservation of Momentum | Total amount of momentum of a system stays the same as long as no outside forces act on the system. |
| Example of Velocity | 20 kmph North |
| Acceleration formula | A = Final - Original velocity/time |
