The aerodynamic drag of a new sports car is to be predicted at a speed of 100 km/hr at air temperature of 25oC. Automotive engineers build a ¼ scale model of the car to test in a wind tunnel, where the air temperature is 10oC. A drag balance is used to measure the drag, and the moving belt is used to simulate the moving ground. Determine the speed of the wind tunnel that the engineers must run in order to achieve similarity between the model and prototype. I would say something more... like maybe tell you what I've done and stuffs, but I'm just plain stuck. It's the kind of stuck that has you running up walls, and scratching brains out. Please, just some direction. Thanks.