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Ch. 3 Vocab.
vocab
| Term | Definition |
|---|---|
| Newton's second law of motion | the acceleration of an object is in the same direction as the net force on the object |
| friction | the force opposes the sliding motion of two surfaces that are touching each other |
| static friction | frictional force that prevents two surfaces from sliding past each other |
| sliding friction | the force that opposes the motion of two surfaces sliding past each other |
| air resistance | opposes the motion of objects that move through the air |
| gravity | an attractive force between any two objects that depends on the masses of the objects and the distance between them |
| weight | the gravitational force exerted on and object |
| centripetal acceleration | acceleration toward the center of a curved or circular path |
| centripetal force | the net force exerted toward the center of a curved path |
| Newton's third law of motion | describes action-reaction pairs this way: when one object exerts a force on a second object, the second one exerts a force on the first that is equal in strength and opposite in direction |
| momentum | the product of and objects mass and velocity |