JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions JEE PYQ - Mathematical Tools Units and Dimensions

  • question_answer
    A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00\[m{{s}^{-1}}\]. The magnitude of its momentum is recorded as [AIEEE 2008]

    A) 17.56 kg \[m{{s}^{-1}}\]

    B) 17.57 kg \[m{{s}^{-1}}\]

    C) 17. 6 kg \[m{{s}^{-1}}\]

    D) 17.565 kg \[m{{s}^{-1}}\]

    Correct Answer: C

    Solution :

    [c] p = mv = 3.513\[\times \]5.00 = 17.565 kg\[m{{s}^{-1}}\]
    Since result should have only 3 significant digits \[\therefore \] p = 17.6 kg \[m{{s}^{-1}}\]


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