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Ch 1 Sec 3 Vocab Words
Vocab Words
8
Science
9th Grade
10/08/2007

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Term
friciton
Definition
the force that opposes motion between two surfaces that are touching
Term
Newton's second law of motion
Definition
the net force acting on an object  causes the object to accelerate in the directioin of the net force
Term
newton's third law of motion
Definition

describes action- reaction pairs- to every action force there is an equal and opposite reaction force

Term
law of gravitation
Definition
any two masses exert an attractive force on each other
Term
weight
Definition
the gravitational force exerted on an object
Term

centripetal acceleration

Definition
acceleration toward the center of a curved circular path
Term
centripetal force
Definition
a force directed toward the center of the circle for an object moving in an circular motion
Term
momentum
Definition
property that a moving object has because of its mass and velocity
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