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Chapter 2 Vocab
science
| Term | Definition |
|---|---|
| force | push or pull |
| newton | basic SI unit of force |
| net force | combination of all forces acting on an object |
| Unbalanced forces | whenever net forces are acting on an an object |
| balanced forces | equal forces acting on an object |
| friction | force that objects exert when they rub against each other |
| static friction | friction acting on stationary objects |
| sliding friction | friction when two solid objects |
| rolling friction | friction when an object rolls across a surface |
| fluid friction | friction when a solid object moves through a fluid |
| gravity | force that pulls objects towards each other |
| mass | amount of matter in an object |
| weight | force of gravity on a person or object |
| free fall | only gravity is acting on an object |
| air resistance | upward force exerted on falling objects |
| terminal velocity | when air resistance = weight |
| projectile | object that is thrown |
| Inertia | resistance of motion |
| satellite | any object that rotates around nother object in space |
| centripetal force | force caussing objects to move in a circular path |