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Unit 1, Motion
Unit 1
| Term | Definition |
|---|---|
| Position | describes the 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 | a 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 pull |
| Net force | combination of all the forces acting on an object |
| Inertia | the tendency of all objects to resist 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 | it travels around another object in space |
| Fluid | any material that can flow and that takes the shape of its container |
| Pressure | the measure of how much force is acting on a given area |
| Pascal | unit for pressure |
| Atmospheric Pressure | the pressure caused by the weight of the atmosphere |
| Buoyant Force | an upward force that fluids exert on all matter |
| Archimedes' Principale | states that the buoyant force action on an object in a fluid is an upward force equal to the weight of fluid that the object displaces |