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Punjab Medical Punjab - MET Solved Paper-2003

  • question_answer
    A ball of mass \[10\,\,g\] moving with acceleration of \[20m/{{s}^{2}}\] is hit by a force which acts on it for 0.1 sec. The impulsive force is:

    A) \[1.2\,\,Ns\]                      

    B) \[0.3\,\,Ns\]

    C) \[0.1\,\,Ns\]                      

    D) \[0.5\,\,Ns\]

    Correct Answer: B

    Solution :

    Here: mass of the ball\[m=150\,\,g\]time\[=0.15\,\,kg\] Acceleration of the ball\[=20m/{{s}^{2}}\] \[dt=0.1\,\,s\] Force, \[F=ma=0.15\times 20=3\,\,N\] Now impulsive force                 \[=F\times dt=3\times 0.1\]                 \[=0.3\,\,Ns\]


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