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A particle projected from the level grou...

A particle projected from the level ground just clears in its ascent a wall `30 m` high and `120sqrt3` away measured horizontally.The time since projection to clear the wall is two second.It will strike the ground in the same horizontal plane from the wall on the other side of a distance of (in metres)

A

`150 sqrt(3)`

B

`180 sqrt(3)`

C

`120 sqrt(3)`

D

`210 sqrt(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`x=u cos theta t, y =u sin theta t-(1)/(2) "gt"^(2)`
`R=(2u cos theta u sin theta)/(g), x^(1) =R-x`
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