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JEE Main & Advanced Sample Paper JEE Main Sample Paper-34

  • question_answer
     A particle is projected with \[10m{{s}^{-1}}\]at \[{{60}^{o}}\] from horizontal ground. Find magnitude at its average velocity for total time of flight.

    A)  \[20m{{s}^{-1}}\]                           

    B)  \[10m{{s}^{-1}}\]

    C)  \[5m{{s}^{-1}}\]              

    D)  \[2m{{s}^{-1}}\]

    Correct Answer: C

    Solution :

    When \[\vec{a}=\] constant             Average velocity \[=\frac{{{{\vec{v}}}_{i}}+{{{\vec{v}}}_{f}}}{2}\,=\frac{2u\,\cos \theta \hat{i}}{2}\]


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