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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 body of mass 5 kg moving with a velocity 10m/s collides with another body of the mass 20 kg at, rest and comes to rest. The velocity of the second body due to collision is               [Pb. PMT 1999; KCET 2001]

    A)          2.5 m/s

    B)                       5 m/s

    C)          7.5 m/s

    D)                       10 m/s

    Correct Answer: A

    Solution :

             Momentum conservation          \[5\times 10+20\times 0=5\times 0+20\times v\]Þ\[v=2.5\,m/s\]


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