What relationship exists between lift and speed?

The relationship between lift and speed is fundamentally defined by the principles of aerodynamics. As the speed of an aircraft increases, the airflow over the wings becomes more dynamic, resulting in a higher pressure differential between the upper and lower surfaces of the wings. This increased airflow enhances the lift generated, which is crucial during various phases of flight, especially during takeoff and landing.

Lift is a function of several factors, including air density, the area of the wings, the coefficient of lift (which can be influenced by the angle of attack), and the square of the speed. As speed increases, the velocity of air over the wings increases, thereby significantly increasing the lift according to the lift equation, which indicates that lift is proportional to the square of the speed.

Understanding this relationship is vital for pilots to manage the aircraft effectively; they must maintain sufficient speed to ensure adequate lift during operations. Thus, the correct answer accurately reflects the aerodynamic principles governing the interaction between lift and speed.