Question

A man wishes to cross a river perpendicularly. In still water he takes 4 minutes to cross the river, but in flowing river he takes 5 minutes. If the river is 100 metres wide, the velocity of the flowing water of the river is

Answer 1

THANKS FOR THE QUESTION !

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GIVEN :

TIME FOR PASSING THROUGH RIVER FROM STILL WATER :

=> 4 MIN. = 4*60= 240s

WIDTH OF THE RIVER :

=> 100 M

TIME FOR PASSING THROUGH RIVER FROM FLOWING WATER IS :

=>. 5 MIN = 5*60 = 300 s

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WE SHOULD USE THE FORMULA :

SPEED = DISTANCE / TIME

SPEED IN FLOWING WATER = 100M / 300 s

SPEED IN FLOWING WATER = 1/3 m/s

SPEED IN FLOWING WATER =

=> 0.33 M/S OR 1/3 M/S <=

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HOPE IT WILL HELP U .....

THANKS AGAIN !

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