A man-powered aircraft has a presented area of 8m and is designed to fly in Klamath Falls where air has a density of 0.9 kg/m^3 and a pressure of 1.7x10^5 Pa at 30 m/s with a drag force of 200 N. Note: Area and length are not specified. Using Reynolds scaling for velocity and drag scaling for the force, F = CpAv^2/20. For a 1/24 scale (on length) model, what velocity should be used for Reynolds scaling in 20°C water?