Forces of Flight

1. Which of the following best describes the relationship between thrust and drag for a plane flying at a constant speed and altitude? A) Thrust is greater than drag. B) Thrust is less than drag. C) Thrust is equal to drag. D) Thrust and drag are unrelated.

2. An airplane wing is designed to create lift. Which statement best describes how the shape of the wing achieves this? A) Air travels faster over the bottom of the wing, creating higher pressure. B) Air travels faster over the top of the wing, creating lower pressure. C) Air travels at the same speed over both surfaces, creating equal pressure. D) The shape of the wing has no impact on air pressure or lift.

3. A plane is preparing to land. The pilot decreases the engine power. What happens to the four forces acting on the plane? A) Thrust increases, drag decreases, lift increases, weight remains constant. B) Thrust decreases, drag increases, lift decreases, weight remains constant. C) Thrust decreases, drag decreases, lift increases, weight decreases. D) Thrust increases, drag increases, lift decreases, weight increases.