In fluid dynamics, the drag equation is a formula used to calculate the force of drag experienced by an object due to movement through a fully enclosing fluid
FD=21CDρv2A
where
- FD is the drag force, which is by definition the force component in the direction of the flow velocity,
- ρ is the density of the fluid,
- v is the velocity of the object relative to the fluid,
- A is the reference area, and
- CD is the drag coefficient.
What units can the quantity (CD)2 have?