Question

A fighter plane, flying horizontally with a speed \(360 \mathrm{kmph}\) at an altitude of \(500 \mathrm{~m}\) drops a bomb for a target straight ahead of it on the ground. The bomb .should be dropped at what approximate distance ahead of the target ? Assume that acceleration due to gravity \((\mathrm{g})\) is \(10 \mathrm{~ms}^{-2}\). Also neglect air drag
(A) \(1000 \mathrm{~m}\)
(B) \(50 \sqrt{5} \mathrm{~m}\)
(C) \(500 \sqrt{5} \mathrm{~m}\)
(D) \(866 \mathrm{~m}\)

Answer 1

Ans: (A)
 \(v=360 \mathrm{~km} / \mathrm{h}=100 \mathrm{~m} / \mathrm{s} .\)
\(h=500 \mathrm{~m}\)
\(\mathrm{R}=\mathrm{u} \sqrt{\frac{2 \mathrm{~h}}{\mathrm{~g}}}=100 \times \sqrt{\frac{2 \times 500}{10}}=1000 \mathrm{~m}\)

Answer 2

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Answer 3

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