Water (density = 1 x l03 kg/m3) flows at 16.7 m/s through a pipe with radius 0.04 m. This same pipe goes up to the second floor of the building, 6.3 m higher, and the pressure remains unchanged. What is the speed of the water flow on the second floor?

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.