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JEE Main & Advanced Physics Two Dimensional Motion Question Bank Self Evaluation Test - Motion in a Plane

  • question_answer
    A body is thrown with a velocity of \[9.8\text{ }m{{s}^{-1}}\] making an angle of \[30{}^\circ \] with the horizontal. It will hit the ground after a time

    A) 3.0 s    

    B)        2.0 s

    C) 1.5 s

    D)                    1 s

    Correct Answer: D

    Solution :

    [d] Time of flight = \[\frac{2\text{u sin}\theta }{\text{g}}\]\[=\frac{2\times 9.8\times \sin 30{}^\circ }{9.8}=2\times \frac{1}{2}=1\text{ sec}\text{.}\]


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