Question: The drag coefficient for a car is given by D / ( 1 / 2 rho U 2 A ) where D is the

The drag coefficient for a car is given by D/(1/2\rho U2A) where D is the drag force on the car, \rho the density of air, U the car's speed, and A its frontal projected area. What is the force that the drag force is non-dimensionalised by?

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