A car manufacturer is trying to estimate the long-term aerodynamic power requirements for a new vehicle. The manufacturer has wind tunnel tested a 5/6th scale model and obtained the drag and lift coefficients as a function of yaw angle, to which the company engineers have fitted the following equations (where y is in degrees): CD=0.93 +0.0013. y2 CL = 0.85 +0.0003 .v2 From wind rose data engineers predict an average wind speed of 4.2 m/s at a height of 10 m for residential suburban terrain. The height to the roof of the car is 1.4 m; for the purposes of drag calculation use the predicted velocity at a height of 0.8m. Assuming that the wind can approach the vehicle from any angle, calculate the wind-averaged drag coefficient for a vehicle speed of 100 km/h