As a summer intern assigned to the olympics kayaking committee, you need to determine the speed of water flowing through a rapids section of the river in order to classify the rapids. for the purposes of your calculation, you assume the river has a rectangular cross section. you determine that for the region of interest, the river narrows from a width of 14 m to a width of 5.0 m and the depth of the river decreases from 2.0 m to 0.92 m. you also know that the speed of the river before the rapids is 1.9 m/s. determine the speed of the river through the section of rapids.