Consider the same rectangular structure of width $b=5m$ and height $15m,$ positioned in a

channel of $25m$ width. The discharge $Q$ through the channel is $250m^3{s}^{-1}$ and the height $h$

of water is $5\mathrm{.}0m.$ Now that you have calculated the flow velocity past the sides of the

structure, what is the hydrodynamic drag force on the structure?

You do not need to input units, only the numerical answer.