Which two forces are considered aerodynamic forces?

Aerodynamic forces specifically refer to those forces that act on an object due to the motion of air around it. In aviation and aerodynamics, the primary aerodynamic forces are lift and drag.

Lift is the force that acts perpendicular to the relative wind and enables an aircraft to rise off the ground. It is created primarily by the shape of the wing and its angle of attack, which generates a difference in pressure between the upper and lower surfaces of the wing.

Drag, on the other hand, is the aerodynamic resistance that opposes the motion of the aircraft through the air. It is influenced by several factors, including the shape of the aircraft, its speed, and the density of the air.

Together, lift and drag are crucial for analyzing and understanding the performance and behavior of an aircraft in flight. They are fundamentally linked to the principles of aerodynamics, making them the correct choice when identifying aerodynamic forces.

The other options highlight forces that either do not pertain directly to the effects of air movement on the aircraft or mix aerodynamic forces with non-aerodynamic forces, such as weight, which is a gravitational force, and thrust, which is a propulsion force.