The velocity of water in a river is 2kmph while width is 400m a oat is rowed from a point rowing always aiming oppsite point at 8kmph of still water velocity.on reaching the opposite bank the drift is?
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Answer:
Explanation:
Rowing is done always aiming in perpendicular direction to the flow of the river.
So net velocity of the boat has a velocity of 8 kmph perpendicular to the flow of river and 2 kmph along the flow of river water.
The boat crosses the river in 400 meters / 8 kmph = 1/20 Hours = 3 minutes
In 3 minutes, the boat will travel along the flow of the river
= 1/20 hours * 2 kmph = 0.1 km
Hence the drift is 0.1 km.
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