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Motion and Forces
Unit 1: Lessons 1-4
| Term | Definition |
|---|---|
| Position | describes the location of an object |
| Reference Point | a location to which you compare other locations |
| Motion | change in position over time |
| Speed | a measure of how far something moves in a given amount of time |
| Vector | a quantity that has both size and direction |
| Velocity | is speed in a specific direction |
| Acceleration | the rate at which velocity changes |
| Centripetal Acceleration | Acceleration in a circular motion |
| Force | Push or a pull |
| Net Force | combination of all the 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 | the path that an object follows as it travels around another object in space |