"Force equals the rate of change of momentum." This is the only direct cause of aerodynamic force. For a wing to experience an upward force (lift), it must impart a downward change of momentum to the air. Lift is the reaction to turning the flow downward.
Lift per unit span = ρ × V × Γ Where ρ is density, V is freestream velocity, and Γ is circulation. understanding aerodynamics arguing from the real physics pdf
Do not settle for stories that feel good. Test every explanation against Newton’s laws and the conservation of mass. If an explanation cannot account for a flat plate flying upside-down, discard it. Real aerodynamics is not magic; it is the beautiful, inevitable consequence of a solid object moving through a fluid that must obey three simple rules. Master those rules, and you master the air. "Force equals the rate of change of momentum
Understanding Aerodynamics: Arguing from the Real Physics Lift per unit span = ρ × V