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MGIMS WARDHA MGIMS WARDHA Solved Paper-2005

  • question_answer
    A ball of mass ' m' elastically collides with a wall with velocity \['\upsilon '\] then change in its momentum is equal to :

    A) \[2m\]                                 

    B) \[2\,m\upsilon \]

    C) \[+8m\upsilon \]                             

    D) Zero

    Correct Answer: B

    Solution :

    The collision is elastic, so the ball restrons with velocity \[\upsilon \] So, change in moment in                 \[=m\upsilon -(-m\upsilon )\]                 \[=2m\upsilon \]


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