A man wearing a hat of extended length 12cm is running in rain falling vertically downwards with speed 10m/s. The maximum speed with which man can ru, so that rain drops does not fall on his face (the length of his face below the extended part of the hat is 16cm) will be?
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Speed =10m/s
Extended length of hair is 12 cm
The length of face below hat is 16 cm
tanx =vmax10=1216vmax=7.5m/s
The man must run with maximum speed of 7.5 m/s.
Extended length of hair is 12 cm
The length of face below hat is 16 cm
tanx =vmax10=1216vmax=7.5m/s
The man must run with maximum speed of 7.5 m/s.
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