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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-9

  • question_answer
    A particle moves along a straight line such that its displacement at any time f is given by \[s={{t}^{3}}-6{{t}^{2}}+3t+4\]metre. The velocity when the acceleration is zero is

    A)  \[3\,\,m{{s}^{-1}}\]    

    B)  \[-\,12\,\,m{{s}^{-1}}\]

    C)  \[42\,\,m{{s}^{-1}}\]  

    D)  \[-\,9\,\,m{{s}^{-1}}\]

    Correct Answer: D

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