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Units and Dimensions

If impulse I ...

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If impulse I varies with time t as I=20t^2-40t.The change in momentum is minimum at -t=2s -t=1/2s -t=1s -t=3/2

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I

varies with time

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f (k g m s^{- 1}) = 20 t^{2} - 40 t

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