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NEET AIPMT SOLVED PAPER SCREENING 2010

  • question_answer
    Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be

    A) 2v        

    B)                        0                             

    C)        1.5v                       

    D)        v

    Correct Answer: B

    Solution :

    As initially both the particles were at rest therefore velocity of centre of mass was zero and there is no external force on the system so speed of centre of mass remains constant ie, it should be equal to zero.


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