Mr. Ferrell Unit 3 acceleration and motion
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Created by:
frantzk2011 on October 3, 2010
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15 terms
Terms | Definitions |
|---|---|
 force | a push or pull |
| net force | the total sum of forces on an object |
| unbalanced forces | unbalance |
| balanced forces | forces that have the samesize in opposite directions |
| inertia | the tendency of an object to maintain state of motion |
| newton | unit of force kg x m/s2 |
| friction | when two surfaces rub together, one of the two gets caught on the other surface |
| sliding friction | friction due to 2 objects sliding against each other |
| rolling friction | friction due to two objects rolling over a surface |
| fluid friction | friction between two solids when fluid is between them |
| gravity | force that pulls objects toward earth |
| free fall | occurs only when an object is falling with no air resistance |
| projectile | an object that is thrown |
| air resistance | a friction that interferes with freefall |
| terminal velocity | the fastest an object can fall with air resistance |
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