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NEET Sample Paper NEET Sample Test Paper-23

  • question_answer
    The linear momentum P of a body moving in one dimension varies with time according to the equation \[P=a+b{{t}^{2}}\]where a and b are positive constants. The net force acting on the body is

    A)  A constant

    B)  Proportional to \[{{t}^{2}}\]

    C)  Inversely proportional to t

    D)  Proportional to t

    Correct Answer: D

    Solution :

    \[F=\frac{dP}{dt}=\frac{d}{dt}(a+b{{t}^{2}})=2bt\] \[\therefore \]F is directly proportional to t Hence, the correction option is [d].


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