| A | B |
|---|
| Speed | Rate of change in position, or distance/time |
| Instantaneous Speed | The rate of motion at a given instant |
| Constant Speed | The same speed over a long period of time |
| Average Speed | Total distance traveled / total time |
| Velocity | Both speed and direction |
| Acceleration | Includes both speed and direction |
| Force | A push or pull on an object |
| Balanced Force | Forces equal in size and opposite in direction |
| Net Force | Always changes the velocity of an object |
| Inertia | The tendency of an object to resist a change in motion |
| Friction | An opposing force between two surfaces |
| Gravity | The force that every object exerts on every other object |
| Weight | The measure of the force of gravity |
