Kinematics Question 627

Question: A bomb is dropped on an enemy post by an aero plane flying horizontally with a velocity of 60kmh1 and at a height of 490 m. At the time of dropping the bomb, how far the aero plane should be from the enemy post so that the bomb may directly hit the target?

Options:

A) 4003m

B)5003m

C) 17003m

D)498m

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Time taken for vertical direction motion t=2hg=2×4909.8=100=10s

The same time is for horizontal direction. x=vt=(60×518)×10=5003 m



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