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A ball is projected from the top of a to...

A ball is projected from the top of a tower with a velocity `3hati+4hatj+5hatk ms^(-1)`,where `hati+hatj+hatk` are unit vectors along east, north and vertical upwards respectively. If the height of the tower is `30 m`, its range is `(g=10 ms^(-1))`

A

`12 m`

B

`9 m`

C

`15 m`

D

`25 m`

Text Solution

Verified by Experts

The correct Answer is:
C
`T=(u sin theta+sqrt((u sin theta)^(2)+2gH))/g,R=u cos theta.T`
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