Understanding How Airplanes Fly

What principle explains the forward movement of a jet airplane?

• Law of Conservation of Energy

• Pythagorean Theorem

• Newton's 3rd Law of Motion

• Bernoulli's Principle

What is the primary source of lift for an airplane?

• The engines

• The tail

• The wings

• The fuselage

How does the design of airplane wings contribute to lift?

• By allowing air to flow faster over the top than the bottom

• By reducing the speed of the plane

• By creating more drag

• By increasing the weight of the plane

Which force must be greater than the weight of the airplane for it to stay airborne?

• Gravity

• Thrust

• Drag

• Lift

What must be true for an airplane to overcome drag and fly?

• Drag must be greater than thrust

• Thrust must be greater than drag

• Weight must be greater than lift

• Lift must be equal to drag