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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 stone falls from a balloon that is descending at a uniform rate of \[12\,\,m/s\]. The displacement of the stone from the point of release after 10 sec is

    A) 490 \[m\]         

    B)             510 \[m\]

    C)             610 \[m\]

    D)                      725 \[m\]

    Correct Answer: C

    Solution :

                    \[u=12\ m/s\], \[g=9.8\ m/{{\sec }^{2}}\], \[t=10\ \sec \]             Displacement \[=ut+\frac{1}{2}g{{t}^{2}}\]                                   \[=12\times 10+\frac{1}{2}\times 9.8\times 100=610m\]


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