A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

Question

Arun · Answer

For minimum time the velocity in direction of motion shoud be maximum. And since speed of river is perpendicular hence have no influence on time taken to cross it. Now for maximum speed boat should move perpendicular to flow of river hence tme = distance ÷ speed = 4÷4=1hr

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A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

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A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

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