Multiple choice general knowledge science & technology

which of the following forces assists the plane in flying,takeoff & landing

  1. Lift

  2. Pressure

  3. Lift & Drag

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lift & Drag is the correct answer - both forces are essential for flight. Lift opposes gravity and keeps the aircraft airborne, generated primarily by the wings. Drag opposes forward motion and is actually necessary during landing - flaps and other devices increase drag to slow the aircraft. During takeoff, lift must exceed weight while drag must be overcome by engine thrust. Pressure differences create these forces but isn't itself the aerodynamic force.

Keep practicing — related questions