Newton's Laws
Which law states that an object continues in its state of motion unless acted on by an external force?
Newton’s First Law
What happens to air pressure when airspeed increases under comparable flow conditions?
Air Pressure Decreases
What is the name for the cross-sectional shape of an aircraft wing?
An airfoil
What gas flows around an aircraft wing to help produce lift?
Air
What is the upward aerodynamic force acting on an aircraft?
Lift
When a wing deflects air downward, what reaction force does the air exert on the wing?
An upward force that contributes to lift
What principle describes the relationship between airflow speed and pressure?
Bernoulli’s Principle
What aerodynamic force helps oppose an aircraft’s weight?
Lift
What happens when you blow air over a curved piece of paper?
The paper rises toward the airflow
What must flow relative to a wing for it to produce aerodynamic lift in normal flight?
Airflow
Which law explains how a force changes the motion of air?
Newton’s Second Law
Which has lower pressure: faster-moving air or slower-moving air?
Faster-moving air
What does a wing’s shape influence as air flows around it?
Airflow direction, speed, and pressure distribution
Why can curved paper rise when air moves faster over its upper surface?
Pressure above decreases, allowing higher pressure below to push it upward
How does a wing change the air as it produces lift?
It deflects air, generally giving it a downward component
Which law states that every action has an equal and opposite reaction?
Newton's Third Law
What pressure difference across a wing helps produce lift?
Lower pressure above the wing than below it
What does the curved upper surface of a typical wing help influence?
Airflow and pressure distribution
What two properties of moving air are central to Bernoulli’s Principle?
Air speed and pressure
Name two factors that influence the amount of lift produced by a wing.
Airspeed, air density, wing area, angle of attack, etc.
Which two Newton’s laws explain lift through airflow deflection and reaction forces?
Newton’s Second and Third Laws
Does Bernoulli’s Principle alone fully explain lift?
No, lift involves pressure distribution and airflow deflection
True or false: Lift is produced only because air travels farther over the top of the wing.
False
What is it called when a wing changes the direction of airflow?
Airflow deflection
How does Bernoulli’s Principle and Newton’s Third Law help explain lift?
Pressure differences and airflow deflection produce an overall upward force