Kinematics Question 508
Question: At the height 80 m, an aeroplane is moving with 150 m/s. A bomb is dropped from it so as to hit a target. At what distance from the target should the bomb be dropped (given g = 10 m/s2)[BCECE 2004]
Options:
A) 605.3 m
B)600 m
C) 80 m
D) 230 m
Show Answer
Answer:
Correct Answer: A
Solution:
The horizontal distance covered by a bomb,
$ BC=v _{H}\times \sqrt{\frac{2h}{g}}=150\sqrt{\frac{2\times 80}{10}}=150\times 4=600m $
The distance of the target from the dropping point of the bomb,
$ AC=\sqrt{AB^{2}+BC^{2}}=\sqrt{{{(80)}^{2}}+{{(60)}^{2}}}=80m $
BETA
