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Forces & Motion
| Term | Definition |
|---|---|
| Acceleration | A measure of the change in velocity during a period of time |
| Force | A push or pull on an object |
| Contact Force | A push or pull on an object by another object that is touching it |
| Newtons second law of motion | Law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass |
| Friction | A contract |
| Inertia | An object ability to resist change in motion |
| Newton's 3rd Law of Motion | When a 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 in the opposite direction |
| Force Pair | The forces two objects apply to each other |
| Normal Force | The force that pushes perpendicular to the objects surface |
| Elastic collision | When colliding objects bounce off each other |
| Inelastic collision | A collision were there is a loss of kinetic energy |
| Gravity | An attractive force that exists between all objects that have mass |
| Non-Contact force | A force that one object applies to another object without touching it |
| Field | A region of space that has a physical quantity (such as force) at every point |
| Weight | The gravitational force exerted on a object |
| Free Body Diagram | A simple model to understand what will happen to an object due to a force |
| Net Force | The combination of all the forces acting on a object |
| Newtons 1st Law | An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts upon it |
| Motion | The process of changing position |
| 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 |
| Velocity | The speed and the direction of a moving object |
| Vector | A quantity that has both magnitude and direction |
| Reference Point | Starting point you use to describe location |
| Position | The distance and direction from a reference point |