Questions
A rifle shoots a bullet with a muzzle velocity of 400 m/sec at a small target 400 metre away. The height above the target at which the bullet must be aimed to hit the target is: (Take g =10ms-2)
detailed solution
Correct option is B
Time taken by bullet to reach the target= distance velocity = distance ucosθAs θ is very small, cos θ = 1 Time = distance u=400400=1secVertical deflection of bullet=12gt2=12×10×(1)2=5 metreTalk to our academic expert!
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