Physics Chapter 9 Study Guide
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the acceleration of a body is proportional to the net force on it and inversely proportional to is mass; this is a statement of
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Newton's second law
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when one object exerts a force on a second object, the second obect exerts a force on the fist that is equal in magnitude and direction; this is a statement of
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Newton's third law
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a quantity that has magnitude and direction
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vector
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the product of the average force exerted on an object and the time interval through which it acts is the
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impulse
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the product of the mass and velocity of a body is its
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linear momentum
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states that the impulse on an object is equal to the change of momentum that it causes
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impulse-momentum theorem
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the quantity of motion used with objects rotating around a fixed axis is
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angular momentum
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forces within a closed system are
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internal forces
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all the forces that act on a system from outside the system are
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external forces
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does not gain or lose
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closed system
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states that the momenum of any clcosed system with no net external force actin on it does not change
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law of conservation of momentum
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aa closed system in which the net external force on the system is zero
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isolated system
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the backward motion of part of an isolated, closed system
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recoil
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the product of a force and a lever arm is
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torque
