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23 December, 01:35

An object of mass 3 kg, moving with and sticks to an object of mass 2.00 kg with an initial velocity of 3.00 m/s. Find the final velocity of the composite object.

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  1. 23 December, 02:21
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    1.8 m/s

    Explanation:

    momentum = mass * velocity

    initial momentum = m1v1+m2v2

    = 3*3 + 2*0 = 9+0 = 9 kg m/s

    let combined velocity be V

    HENCE

    final momentum = total mass * velocity

    = (3+2) * V = 5V

    According to law of conservation of momentum

    final momentum = initial momentum

    5V = 9

    V = 9/5

    V = 1.8 m/s
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