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A bird is sitting on the top of a vertic...

A bird is sitting on the top of a vertical pole 20 m high and its elevation from a point O on the ground is `45^@`. It flies off horizontally straight away from the point O. After one second, the elevation of the bird from O is reduced to `30^@`. Then the speed ( in `m//s`) of the bird is

A

`14.64m//s`

B

`16.4m//s`

C

`12.64m//s`

D

`15.64m//s`

Text Solution

Verified by Experts

The correct Answer is:
C
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