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Vocabulary
| Term | Definition |
|---|---|
| Acceleration | A measure of the changes in velocity during a period of time. |
| Force | A push or a pull on an object |
| Contact Force | A push or a pull on one object by another object that is touching it |
| Newton's 2nd Law | 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 contact Force that resists the sliding motion of two surfaces that are touching. |
| 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 to an object |
| Newton's first law | An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object. |
| Non-contact force | A force that one object can apply to another object without touching it. |
| Gravity | An attractive force that exists between all objects that have mass |
| Feild | A region of space that has a physical quantity |
| Weight | The gravitational force exerted on an object |
| Newtons 3rd law | When an object applies a force on another object, the second object applies a force of the same strength |
| Force pair | The forces two objects apply to each other |
| Normal | The force that pushes perpendicular to the objects surface |
| Elastic Collision | When colliding objects bounce off each other. |
| Inelastic collision | When colliding objects don't bounce off each other. |
| Reference point | The starting point you choose to describe the location, or position, of an object |
| Position | An objects distance and direction from a reference point. |
| Motion | The process of changing position |
| Vector | A quantity that has magnitude and direction |
| Velocity | The speed and the direction of a moving object |
| inertia | Object stays at rest until contacted by a force. |
| Speed | A measure of the distance an object travels in a given amount of time |
| Displacement | The difference between the initial, or starting, position and the final position |