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A man running on the horizontal road at ...

A man running on the horizontal road at ` 8 km h^(-1)` find the rain appears to be falling vertically. He incresases his speed to `12 km h^(-1)` and find that the drops make angle ` 30^2` with the vertical. Fin dthe speed and direction of the rain with respedt to the road.

A

`4 sqrt7km//h`

B

`9 sqrt7 km//h`

C

`12 sqrt7km//h`

D

`15 sqrt7km//h`

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The correct Answer is:
A
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DISHA PUBLICATION-MOTION IN A STRAIGHT LINE-Exercise-1
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