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18 October, 09:41

A 2 kg blob of putty moving at 3m/s slams into a 2 kg blob of putty at rest calculate the speed of the two stuck together blobs of putty immediately after colliding

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  1. 18 October, 10:04
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    The speed of the two stuck together blobs of putty immediately after colliding = 1.5 m/s

    Explanation:

    The momentum is conserved before and after collision. That is initial momentum value is equal to final momentum value.

    Initial momentum = 2 * 3 + 2 * 0 = 6 kg m/s

    So final momentum = 6 kg m/s

    Final mass of body = 2 + 2 = 4 kilogram

    Final velocity of body = Final momentum / Final mass = 6/4 = 1.5 m/s

    So, the speed of the two stuck together blobs of putty immediately after colliding = 1.5 m/s
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