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30 December, 02:10

A boat of mass 115 kg drifts along a river at a speed of 13 m/s to the east. What impulse is required to decrease the speed of the boat to 10 m/s to the east?

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  1. 30 December, 03:56
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    M = 115 kg.

    Final velocity, v = 10 m/s to the east

    Initial Velocity, u = 13 m/s to the east

    Impulse = m (v - u)

    = 115 * (10 - 13)

    = 115*-3 = - 345 kgm/s or - 345 Ns
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