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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 |