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A bomb is dropped on an enemy post by an...

A bomb is dropped on an enemy post by an aeroplane flying with a horizontal velocity of `60 km//hr` and at a height of 490 m. How far the aeroplane must be from the enemy post at time of dropping the bomb, so that it may directly hit the target ?` (g = 9.8 m//s^(2)).` What is the trajectory of the bomb as seen by an observer on the earth? What as seen by a person sitting inside the aeroplane?

A

`(400)/3m`

B

`(500)/3 m`

C

`(1700)/3m`

D

`498 m`

Text Solution

Verified by Experts

The correct Answer is:
B
`T=sqrt((2h)/(g))=sqrt(2(490)/(9.8))=10sec , x=50/3(1.0)=(500)/(3)m`
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