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Forces,Friction
| Term | Definition |
|---|---|
| Force | Push or pull exerted on an object |
| Newton | A unit measure |
| Net force | the overall force on an object |
| Unbalanced forces | forces that produce a nonzero net force |
| Balanced forces | Equal forces acting on an object |
| Friction | the force that one surface exerts on another |
| Static friction | friction that occurs on objects that don't move |
| Sliding friction | friction the occurs when one surface slides over another |
| Rolling friction | friction that occurs when an object rolls over an surface |
| Fluid friction | friction that occurs when an object goes through and fluid |
| Gravity | a force that pulls objects close to each other |
| Mass | a measure of how much weight is an object |
| Weight | force of gravity on an object |
| Free fall | motion of an object when its falling |
| Air | fluid friction experienced |
| Projectile | an object is thrown |