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JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Motion Under Gravity

  • question_answer
    A body is thrown vertically upwards with velocity u. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity u is given by (g = 9.8 m/s2)                                                 [UPSEAT 2004]              

    A)                         24.5 m/s                     

    B)                         49.0 m/s            

    C)                         73.5 m/s                     

    D)                                  98.0 m/s

    Correct Answer: B

    Solution :

                                The given condition is possible only when body is at its highest position  after 5 seconds             It means time of ascent = 5 sec             and time of flight \[T=\frac{2u}{g}=10\] Þ \[u=50\ m/s\]            


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