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ch 6 PS HRW
chapter 6 PS HRW
5
Physics
8th Grade
12/04/2008

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Term
free fall
Definition
the motion of a body when only the force of gravity is acting on the body
Term
inertia
Definition
the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
Term
momentum
Definition
a quantity defined as the product of the mass and velocity of an object
Term
projectile motion
Definition
the curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth
Term
terminal velocity
Definition
the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
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