A man standing on ground observes that r...

A man standing on ground observes that rain is coming at an agle `45^0` with vertical. When he runs with speed `15sqrt(2)`km/hr rain appears to him vertical. Find speed of rain w.r.t man.

`15 /sqrt(2)` km/hr

`30` km/hr

`15` km/hr

`15 sqrt(2)` km/hr

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