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

  • question_answer
    A large number of bullets are fired in all directions with the same speed v. What is the maximum area on the ground on which these bullets will spread?

    A) \[\frac{\pi {{\text{v}}^{2}}}{\text{g}}\]           

    B)        \[\frac{\pi {{\text{v}}^{4}}}{{{\text{g}}^{2}}}\]

    C) \[{{\pi }^{2}}\frac{{{\text{v}}^{2}}}{{{\text{g}}^{2}}}\]    

    D)        \[\frac{{{\pi }^{2}}{{\text{v}}^{4}}}{{{\text{g}}^{2}}}\]

    Correct Answer: B

    Solution :

    [b] Maximum possible horizontal range Maximum possible area of the circle \[=\pi {{\left( \frac{{{\text{v}}^{\text{2}}}}{\text{g}} \right)}^{2}}=\frac{\pi \,{{\text{v}}^{4}}}{{{\text{g}}^{2}}}\left[ \text{Here r=}\frac{{{\text{v}}^{\text{2}}}}{\text{g}} \right]\]


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