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A man is walking on a level road at a sp...

A man is walking on a level road at a speed of 3.0 km/h. Rain drops fall vertically with a speed of 4.0 km/h. Find the velocity of the raindrops with respect to the man.

A

`3 km//hr`

B

`4 km//hr`

C

`5 km//hr`

D

`7 km//hr`

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