| A | B |
| Action Force | The initial force exerted in a force pair. |
| Newton's 3rd Law of Motion | The concept that for every action there is an equal and opposite reaction. |
| Law of Conservation of Momentum | The principle that states that momentum can be transferred but cannot be lost. |
| Reaction Force | The force exerted in response to an action. |
| Momentum | A property of a moving object, calculated by multiplying the object's mass by its velocity. |
| The letter "P" in the formula P=MxV | Represents momentum.(measured as kg x m/s) |
| The letter "M" in the formula P=MxV | Represents Mass.(measured in kg) |
| The letter "V" in the formula P=MxV | Represents Velocity (measured in m/s |