To a man walking at the rate of 2 km/hour with respect to ground, the rain appears to fall vertically. When he increases his speed to 4 km/hour in same direction of his motion, rain appears to meet him at an angle of 45º with horizontal, find the real direction and speed of the rain.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION
2 
m/s , 45º with vertical and away from the man.
Sol. 
∴ υ x = 2 m/sec
= 
= 
tan 45º = 
υ y = 2
so 
so tan θ = 1 ⇒ θ = 45º
υ r = 
m/sec.
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