A person Aims A Gun At A Target Located At A Horizontal Distance Of 100 M. If The Gun Imparts A Horizontal Speed Of 500 Ms-1 to The Bullet, At What Height Above The Target Must He Aim His Gun In Order To Hit It? Take g = 10 Ms-2.

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person aims a gun at a target located at a horizontal distance of 100 m. If the gun imparts a horizontal speed of 500 ms-1 to the bullet, at what height above the target must he aim his gun in order to hit it? Take g = 10 ms-2.


Correct option is

20 cm

The bullet covers a distance of 100 m in time t =100/500  = 0.2 s. The vertical downward distance moved in time t = 0.2 s is 1/2 gt2 = 1/2 × 10 × (0.2)2 = 0.2 m = 20 cm.



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