Chapter 9 - Momentum

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9 Terms

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Impulse

the product of the average net force on an object and the time intervals over which the force acts

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Momentum

the product of the object’s mass and the object’s velocity; measured in kg x m/s

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Impulse momentum theorem

the impulse on an object equals the object’s final momentum minus the object’s initial momentum

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Closed system

a system that does not gain or lose mass

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Isolated system

a closed system on which the net external force is zero

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Law of conservation of momentum

states that the momentum of any closed, isolated system does not change

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inelastic collisions

a collision in which only momentum is conserved and objects stick together

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Elastic collisions

a type of collision in which no kinetic energy is lost and objects bounce off of each other

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Explosions

when an object goes from whole to multiple objects