| A | B |
| Inertia | The tendency of an object to resist changes in its velocity |
| Friction | A force that opposes motion, resulting from the contact of two surfaces |
| Kinetic friction | Friction that opposes motion once the motion has already started |
| Static friction | Friction that opposes the initiation of motion |
| Newton's First Law | An object in motion (or at rest) will tend to stay in motion (or at rest) until it is acted upon by an outside force |
| Newton's Second Law | When an object is acted on by one or more outside forces, the total force is equal to the mass of the object times the resulting acceleration |
| Newton's Third Law | For every action, there is an equal and opposite reaction |