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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Elastic and Inelastic Collision

  • question_answer
    A gun fires a bullet of mass 50 gm with a velocity of \[30\,m\,{{\sec }^{-1}}\]. Because of this the gun is pushed back with a velocity of \[1\,m\,{{\sec }^{-1}}\]. The mass of the gun is [EAMCET 1989; AIIMS 2001]

    A)          15 kg                             

    B)          30 kg

    C)          1.5 kg

    D)                       20 kg

    Correct Answer: C

    Solution :

             \[{{m}_{G}}=\frac{{{m}_{B}}{{v}_{B}}}{{{v}_{G}}}\]\[\frac{50\times {{10}^{-3}}\times 30}{1}=1.5\ kg\]


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