A man is standing on a road and observes that rain is falling at angle 45º with the vertical. The man starts running on the road with constant acceleration 0.5 m/s 2 . After a certain time from the start of the motion, it appears to him that rain is still falling at angle 45º with the vertical, with speed 
m/s . Motion of the man is in the same vertical plane in which the rain is falling. Then which of the following statement(s) are true.
Text Solution
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V rm cos 45° = V rg cos45°
V rm = 2 
m/s = V rg
V rm cos 45° = V mg – V rg cos45°
+ 
= 4 m/s
using v 2 = u 2 + 2as for the motion of man,
s = 16 m.
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