11th Class Physics Laws Of Motion / गति के नियम Question Bank 11th CBSE Physics NLM, Friction, Circular Motion

  • question_answer
    A ball of 0-5 kg mass moving with a speed of 10 m/s rebounds after striking normally a perfectly elastic wall. Find the change in momentum of the ball.

    Answer:

                    Change in linear momentum = \[-m\upsilon -m\upsilon =-2m\upsilon =-2\times 0.5\times 10=-10kg\,m{{s}^{-1}}\]                


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