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Motion and Forces
Unit 1, Lessons 1-4
| Term | Definition |
|---|---|
| Position | the location of an objet |
| Reference point | a location to which another location is compared |
| Motion | an object's change in position relative to a reference point |
| speed | the distance traveled divided by the time interval during which the motion occurred |
| vector | a quantity that has both size and direction |
| velocity | the speed of an object in a particular direction |
| acceleration | the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change |
| centripetal acceleration | the acceleration directed toward the center of a circular path |
| force | a push or a pull exerted on an object in order to change the motion of the object; force has size and direction |
| net force | the combination of all of the forces acting on an object |
| inertia | the tendency of an object to resist a change in motion unless an outside force acts on the ocject |
| gravity | a force of attraction between objects that is due to their masses |
| free fail | the motion of a body wen only the force of gravity is acting on the body |
| orbit | the path that a body follows as it travels around another body in space |
Created by:
18kellera1027
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