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Ps ch 3
Vocab
Term | Definition |
---|---|
Newton's second law of motion | states that the acceleration of an object is in the same direction as the net force on the object |
friction | the force that opposed the sliding motion of two surfaces that are touching each other |
static friction | the 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 | opposed the motion of objects that move through the air |
gravity | is an attractive force between any two objects depends on the masses of the objects and the distance between them |
weight | gravitational force exerted on an object |
centripetal acceleration | acceleration toward the center of a curved or circular path |
centripetal force | net force exerted toward the center of a curved path |
Newton's third law of motion | describes action-reaction pairs this way:"to every action force there is an equal and opposite reaction force" |
momentum | property o fa moving object that equals its mass times its velocity |