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posted by Anonymous Thursday, August 4, 2011 at 10:56am.

a motorboat travels 25.0 km/h in still water. what will be the magnitude and direction of the velocity of the boat if it is directed upstream on a river that flows at the rate of 4.00 km/h?

Since it is going upstream, subtract the river flow velocity.

A river flows at a uniform speed of 2ms-1 and is 100m wide. A motor boat has a maximum speed in still water of 7ms-1

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