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VMMC VMMC Medical Solved Paper-2006

  • question_answer
    A body initially at rest is moving with uniform acceleration a Its velocity after n second is v. The displacement of the body in 2 s is

    A) \[\frac{2v(n-1)}{n}\]                      

    B) \[\frac{v(n-1)}{n}\]        

    C)        \[\frac{v(n+1)}{n}\]       

    D)        \[\frac{2v(n+1)}{n}\]

    Correct Answer: A

    Solution :

    Displacement in last 2S \[=\frac{1}{2}a{{n}^{2}}-\frac{1}{2}a{{(n-2)}^{2}}=2a(n-1)\] Acceleration         \[a=\frac{v}{n}\]                            \[(\because \,t=n\,s)\] Displacement in last \[2\,s=\frac{2v\,(n-1)}{n}\]


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