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JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Self Evaluation Test - Physical World, Units and Measurements

  • question_answer
    If \[x=at+b{{t}^{2}}\], where x is the distance travelled by the body in kilometers while t is the time in seconds, then the unit of & is

    A) km/s

    B)  \[kms\]

    C)  \[km/{{s}^{2}}\]

    D)  \[km{{s}^{2}}\]

    Correct Answer: C

    Solution :

    [c] \[[x]=[b{{t}^{2}}]\]. Hence \[[b]=[x/{{t}^{2}}]=km/{{s}^{2}}\]


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