A football, meant to be thrown al 60 mi/h in sea-level air p = 1.22 kg/m". u = 1.78 E-5 N s/m'), is to be tested using a one-quarter scale

model in a water tunnel (p =998 kg/m', u 0.0010 N s/m). For dynamic similarity,what is the proper model water velocity? (a) 7.5 mi/h. (b) 15.0 mi/h, (e) 15.6 mi/h. (d) 16.5 mi/h, (e) 30 mi/h