Question Statement:
A football, meant to be thrown at 100 km/h in sea level air ($\rho = 1.22$ kg/m$^3$, $\mu = 1.8 \times 10^{-5}$ Pa-s), is tested in a water tunnel with a 1:2 scale model. If the kinematic viscosity of water is $1.0 \times 10^{-6}$ m$^2$/s, the water flow speed (in m/s) required for dynamic similarity is _________ (round off to 1 decimal place).