A horizontal water pipe tapers so that the cross-sectional area of the pipe decreases. If the water moves at 3 meters per second in the larger portion of the pipe and at 15 meters per second in the smaller portion, what is the change in pressure, in pascals, as the water moves from the larger portion to the smaller portion of the pipe? Assume the density of water is 1000 kilograms per cubic meter and incompressible.