What does the theory of equal transit time state about air molecules over a wing?

The theory of equal transit time proposes that air molecules traveling over the top and bottom surfaces of a wing reach the trailing edge at the same time, which is represented in the choice stating that molecules of air split apart and arrive simultaneously at the trailing edge. This concept is often used to explain the behavior of airflow over airfoil structures and is related to Bernoulli's principle in explaining lift.

In reality, the airflow over a wing is more complex than this theory suggests. The airflow patterns and velocities are affected by various factors, including angle of attack, wing shape, and pressure differences. However, the theory serves as a simplified model that contributes to a basic understanding of aerodynamic lift. The notion that air molecules split and travel around the wing face various challenges in actual physics, but as a theoretical concept, it is meant to illustrate how lift is generated, despite not accurately depicting the intricacies of airflow dynamics.