Forces of Flight

What is a scalar quantity?

• A quantity that depends on direction

• A quantity that has both magnitude and direction

• A quantity that has only magnitude

• A quantity that does not depend on direction

Which of the following is a vector quantity?

• Length

• Speed

• Displacement

• Temperature

What is the magnitude of a vector?

• The direction of the vector

• The size of the vector

• The force acting on the vector

• The weight of the vector

What is the distance of travel of a car driving east at 60 mph for 3 hours?

• 60 miles east

• 120 miles east

• 180 miles

• 3 miles

What is weight or gravity?

• A positive force

• A force directed toward the center of the Earth

• A force dependent on the mass of the airplane

• A force that does not change during flight

What is lift?

• The force that increases the weight of an airplane

• The force that resists the motion of an airplane

• The force that moves an airplane through the air

• The force that holds an airplane in the air

What factors affect the amount of lift?

• Shape of the aircraft

• Size of the aircraft

• Velocity or speed of the aircraft

• All of the answers

What is drag?

• The force that opposes the weight of an airplane

• The force that resists the motion of an airplane

• The force that moves an airplane through the air

• The force that holds an airplane in the air

What factors affect the amount of drag?

• Shape of the aircraft

• Stickiness of the air

• Speed of the aircraft

• All of the above

What is thrust?

• The force that opposes the weight of an airplane

• The force that resists the motion of an airplane

• The force that moves an airplane through the air

• The force that holds an airplane in the air