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    Newtons laws

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    A 31.0 kg gun is resting on a frictionless surface. The gun fires a 50.0 g bullet with a muzzle velocity of 306.0 m/s. Assume that air resistance is negligible.

    (a) Calculate the momenta of the bullet and the gun after the gun is fired.
    kg·m/s (bullet)
    kg·m/s (gun)

    (b) Calculate the kinetic energy of both the bullet and the gun just after firing.
    J (bullet)
    J (gun

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    Solution Preview

    The problem is based on the third law of Newton. "Every action has an equal and opposite reaction". In such a process the total momentum is conserved. In mathematical form Because momentum of the ...

    Solution Summary

    This problem illustartes an application of thet third law of newton. The conversion of momentum , energy etc are demonstrated