2. Questions Bank
  3. JEE Main & Advanced
  4. Mathematics
  5. Applications of Derivatives

JEE Main & Advanced Mathematics Applications of Derivatives Question Bank Application in Mechanics and Rate Measurer

  • question_answer
    The distance s metre covered by a body in t seconds is given by \[s=3{{t}^{2}}-8t+5,\]the body will stop after                    [RPET 2000]

    A)            1 sec

    B)            3/4 sec

    C)            4/3 sec

    D)            4 sec

    Correct Answer: C

    Solution :

               The distance \[s=3{{t}^{2}}-8t+5\] and velocity \[v=\frac{ds}{dt}=6t-8\]                    The body will be stopped when \[v=0\]                    Þ  \[6t-8=0\]  Þ  \[t=4/3\].


You need to login to perform this action.
You will be redirected in 3 sec spinner