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Motion & Forces
Unit 1, lessons 1-4
| Term | Definition |
|---|---|
| position | the location of an object |
| speed | the distance traveled divided by the time interval during the motion occured |
| reference point | a location to which another location is compared |
| vector | a quantity that has both size and direction |
| motion | an object's change in position relative to a reference point |
| 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 pull exerted on an object in order to change to motion of the object; force has size and direction |
| interia | the tendency of an object to resist a change in otion unless and outside force acts on a object |
| net force | the combination of all the forces acting on an object |
| gravity | a force of attraction between objects that is due to their masses |
| free fall | the motion of a body when only the gravity force is acting on the body |
| orbit | the path that the body follows it travels another body in space |
Created by:
18amurphy0209
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