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    Sorry for posting another question, but this one I found really challenging, and I'm not sure how to solve this, as I got a quadratic of the velocity of the shell and I couldn't go on from there.

    Question:

    A gun of mass M kg is free to move horizontally. The gun fires a shell of mass m kg in ahorizontal direction. The energy released by the explosion, which occurred in firing theshell, is E(J). Find the velocity of the shell in terms of m, M and E if all of this energy is givento the shell and the gun.
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    (Original post by TheKevinFang)
    Sorry for posting another question, but this one I found really challenging, and I'm not sure how to solve this, as I got a quadratic of the velocity of the shell and I couldn't go on from there.

    Question:

    A gun of mass M kg is free to move horizontally. The gun fires a shell of mass m kg in ahorizontal direction. The energy released by the explosion, which occurred in firing theshell, is E(J). Find the velocity of the shell in terms of m, M and E if all of this energy is givento the shell and the gun.
    Post some working. You should be able to get a formula for the velocity, without a fullblown quadratic.

    Outline:

    Conservation of momentum.

    Total energy after firing = E.

    Eliminate the velocity of the gun from the two equations.
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    (Original post by ghostwalker)
    Post some working. You should be able to get a formula for the velocity, without a fullblown quadratic.

    Outline:

    Conservation of momentum.

    Total energy after firing = E.

    Eliminate the velocity of the gun from the two equations.
    Thanks, I actually found my mistake 30 seconds after replying...
 
 
 
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