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JIPMER Jipmer Medical Solved Paper-1999

  • question_answer
    A bullet of mass 50 g is fired from a 5 kg gun with a velocity of 1 km/sec. The speed of recoil of the gun is:

    A)  5 m/s                                   

    B)  1 m/s                   

    C)  0.5 m/s               

    D)         10 m/s

    Correct Answer: D

    Solution :

    Applying law of conservation or momentum \[mv\text{ }=\text{ }m\upsilon \] Here, mass of bullet \[m=50\text{ }g=0.05\text{ }kg\] velocity of bullet \[=1\text{ }km\text{/}sec=1000\text{ }m\text{/}sec\] mass of gun \[m=5kg\] or            \[0.05\times 1000=5v\] or            \[v=\frac{0.05\times 1000}{5}\] so,          \[v=10\,m\text{/}s\]


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