| A | B |
|---|
| Net Force | The sum of all the forces acting on an object. |
| Weight | The gravitational force exerted by a large body. |
| Newton's First Law | Things at rest will remain at rest, and things in motion will continue with constant speed and direction unless acted on by a net force. |
| Newton's Second Law | F=ma |
| Newton's First Law | F=0 |
| Newton's Second Law | This law allows us to analyze how an object's motion changes when a net force acts on it. |
| Newton | Unit of force. |
| Friction | A force that opposes motion. |
| Static Friction | A force that opposes the start of motion. |
| Sliding (kinetic) Friction | The opposing force between objects in relative motion. |
| Momentum | The product of an object's mass and velocity. |
| Momentum | p=mv |
| Impulse | The product of a net force and the time interval over which it acts. |
| Impulse | The change in an object's momentum. |
| Law of Conservation of Momentum | The momentum of any closed, isolated system does not change. |
| Change in Momentum | m(v2-v1) |
| Normal Force | The contact force between an obect and the surface it lies on. |
| Intertia | The tendency of an object not to change its motion. |
| Vectors | Quantities with both magnitude and direction. |
| Force and Momentum | Vector quantities. |
