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