My car's mass is 1350 kg. Assuming it has a rolling resistance r of 400 N, and an CSA of 2.2 m2, calculate its drag coefficient. (The density of air...

My car's mass is 1350 kg. Assuming it has a rolling resistance r of 400 N, and an CSA of 2.2 m2, calculate its drag coefficient. (The density of air is 1.23 kg m-3. The rolling resistance, which arises through the deformation of the tyres, can be taken to be conctant over the speed range of the Car.