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Math Help - Elastic vand inelastic collision

  1. #1
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    Elastic vand inelastic collision

    A 5-kg shell is fired from a gun which has a mass of 6000Kg.If the gun recoils with a velocity of 3m/s,find the muzzle velocity of the shell?

    Attempt:
    (5)(0)+(6000)(-3)=V(5+6000)

    I don't know if i am doing it correct?
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  2. #2
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    Quote Originally Posted by mj.alawami View Post
    A 5-kg shell is fired from a gun which has a mass of 6000Kg.If the gun recoils with a velocity of 3m/s,find the muzzle velocity of the shell?

    Attempt:
    (5)(0)+(6000)(-3)=V(5+6000)

    I don't know if i am doing it correct?
    initial momentum of the system = final momentum = 0

    (5 kg)v + (6000 kg)(-3 m/s) = 0

    v = 3600 m/s
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