A person running horizontally observes that rain is falling on his head vertically with speed $10\,m/s$. He stops and observes that rain is coming at an angle $30^o$ with vertical. Find the speed of rain w.r.t. ground
A person running horizontally observes that rain is falling on his head vertically with speed $10\,m/s$. He stops and observes that rain is coming at an angle $30^o$ with vertical. Find the speed of rain w.r.t. ground
- A
$20\,m/s$
- B
$\frac{{20}}{{\sqrt 3 }}m/s$
- C
$10\sqrt 3\,m/s$
- D
$\frac{{10}}{{\sqrt 3 }}m/s$
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