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On a particular day rain drops are falli...

On a particular day rain drops are falling vertically at a speed of 5 m/s. A man holdind a plastic board is running to escape from rain as shown. The lower end of board is at a height half that of man and the board makes `45^(@)` with horizontal. The maximum speed of man so that his feet does not get wet, is

A

5 m/s

B

`5sqrt()2` m/s

C

`5//sqrt()2` m/s

D

zero

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The correct Answer is:
A
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