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Force and Motion
| Term | Definition |
|---|---|
| Inertia | An object's ability to resist any change in motion. |
| Friction | The resistance that one surface or object encounters when moving over another. |
| Velocity | The speed and the direction of a moving object. |
| Displacement | The difference between the initial, or starting position and the final Position. |
| Speed | A measure of the distance an object travels in a given amount of time. |
| Vector | A quantity that has both magnitude and direction. |
| Reference Point | The starting point you chose to describe location, or position, or an object. |
| Position | An objects distance and direction from a reference point. |
| Motion | The process of changing position. |
| Gravity | An attractive force that exists between all objects that have mass. |
| Field | A region of space that has a physical quantity (such as force) at every point. |
| Weight | The gravitational force exerted on an object. |
| Non-Contact Force | A Force that one object applies to another object without touching it. |
| Force Pair | The forces two objects apply to each other. |
| Normal Force | The force that pushes perpendicular to the object's surface. |
| Elastic Collision | When colliding objects bounce off each other. |
| Inelastic Collision | A collision where total kinetic energy is not conserved, though momentum is conserved. |
| Newton's 1st law | An object at rest will stay at rest, and an object in motion will stay in motion unless a Force acts on the |
| Newton's 2nd law | Law that states that acceleration of an object is equal to the net Force exerted on the object divided by the object's mass. |
| Newton's 3rd Law | When an object applies a Force on another object, the second object applies a force of the same strength on the first object but the force is opposite in direction. |
| Free-Body Diagram | A simple model to understand |
| Contact Force | A push or a pull on one object by another object that is touching it. |
| Net Force | The combination of all the forces acting on an object. |
| Acceleration | A measure of the change in velocity during a period of time. |
| Force | A push or pull on an object. |