A prototype automobile is designed for cold weather in Denver, CO (-10°C, 83 kPa). Its drag force is to be tested on a one-seventh-scale model in a wind tunnel at 150 mi/h and at 20°C and 1 atm (101.3 kPa). If the model and prototype satisfy dynamic similarity (Hint: Reynolds number), what prototype velocity, in mi/h, is matched? Gas constant = 287 J K⁻¹ kg⁻¹