JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Second Law of Motion

  • question_answer
    A body of mass m collides against a wall with a velocity v and rebounds with the same speed. Its change of momentum is                           [Kerala PMT 2004]

    A)             2 mv   

    B)             mv      

    C)             ? mv   

    D)             Zero

    Correct Answer: A

    Solution :

                    \[\Delta p={{p}_{i}}-{{p}_{f}}=mv-(-mv)=2\,mv\]


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