A man standing on a road has to hold his umbrella at 
with the vertical to keep the rain
away. He throws the umbrella and starts running at 
. He finds that raindrops are hitting his head vertically.
What is the speed of rain with respect to ground?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Velocity of rain is at 
in vertical direction. So, its horizontal component is 
. When man starts walking with 
rain appears vertical. So horizontal component 
is balanced by his speed of 
. Thus, 
or 
.
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