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A helicopter is flying horizontally with...

A helicopter is flying horizontally with a speed 'v' at an altitude V has to drop a food packet for a man on the ground. What is the distance of helicopter from the man when the food packet is dropped ?

A

` sqrt(( 2 v^(2) h)/(g) + h^(2))`

B

` sqrt(2 gh v ^(2) + h^(2))`

C

` sqrt( ( 2 gh)/( v^(2))) + h^(2)`

D

`sqrt(( 2 ghv^(2) + 1)/( h^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
A

`R = sqrt(( 2 h)/( g)) . v `
`D = sqrt(R ^(2) + h^(2))`
` = sqrt(( sqrt((2h)/(g).v))^(2) + h^(2))`
` D = sqrt(( 2 h v^(2))/( g) + h^(2))`
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