The drag resistance (D) of a projectile depends on its diameter (d), its velocity (V), fluid density (p) and viscosity (µ), and bulk modulus (k). Prove that where CD is the coefficient of drag and A...

The drag resistance (D) of a projectile depends on its diameter (d), its velocity (V), fluid density (p) and viscosity (µ), and bulk modulus (k). Prove that

where CD is the coefficient of drag and A is the biggest cross-sectional area of the projectile perpendicular to the flow direction.