Water, with a density of , flows in a horizontal pipe. in one segment of the pipe, the flow speed is . in a second segment, the flow speed is . what is the difference between the pressure in the second segment () and the pressure in the first segment

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The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.