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Motion and Forces
Unit 1 Lesson 1-4
| Term | Definition |
|---|---|
| Position | Describes location of an object |
| Reference Point | A location to which you compare other locations |
| Motion | A change in position over time |
| Speed | A measure of how far something moves in a given amount of time |
| Vector | Quanity that has both size and direction |
| Velocity | Speed in a specific direction |
| Acceleration | The rate in which velocity changes |
| Centripetal Acceleration | Acceleration in circular motion |
| Force | A push or pull |
| Net Force | Combination of all forces acting on an object |
| Inertia | The tendency of all objects to resist a change in motion |
| Gravity | A force of attraction between objects due to their mass |
| Free Fall | When gravity is pulling it down and no other forces are acting on it |
| Orbit | When it travels around another object in space |