Ap Physics Momentum(Unit 5) Variables

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8 Terms

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p

linear momentum (kg*m/s)

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Δp

linear impulse; change in linear momentum(kg*m/s)

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J(cause)

Linear impulse: an external force applied for a time interval(N*s)

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Δt(momentum)

time interval an external force is applied to change a system’s momentum(s)

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Xcm

position of the center of mass: the weighted-average location of the parts of the system(m)

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Vcm

velocity of the center mass: the weighted-average of the entire system’s motion(m/s)

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Σp

total momentum of a system; only changed by external force(kg*m/s)

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equation for valuecm

valuecm = Σmi*valuei/Σm