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16 November, 19:26

A large fish with a mass of 3.65kg moving with an initial velocity of 5.0 m/s grabs a smaller fish with a mass of 1.30 kg. If the smaller fish was moving in the same direction as the larger fish at a speed of 2.5 m/s before he was eaten, what is the velocity of the two fish after impact?

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  1. 16 November, 19:43
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    m1 = 3.65kg

    v1 = 5 m/s

    m2 = 1.3 kg

    v2 = 2.5 m/s

    V=?

    m1*v1 + m2*v2 = (m1+m2) * V

    V = (m1*v1 + m2*v2) / (m1+m2)

    V = 4.34 m/s
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