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An aeroplane was flying horizontallyvelocity of 720 km/h at an altitude of 490 mWhen it is just vertically above the target abomb is dropped from it. How farhorizontally it missed the target ?(A) 1000 m(C) 100 mwith a(B) 2000 m(D) 200 m |
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Answer» h = (gt^2)/2t = sqrt(2h/g) = sqrt(2*490/9.8) = 10 sv = 720km/h = 720*1000m/3600s = 200 m/ss = vt = 200*10 = 2000 mAnswer: (b) 2000m |
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