Which statement best describes gravity's role during a glide?

• A. Gravity Provides Forward Acceleration Along an Inclined Path
• B. Gravity Provides Lift to Counteract Weight
• C. Gravity Has No Role in Glide
• D. Gravity Opposes Forward Motion

Answer: (A)

During a glide, the airplane descends along an inclined flight path. Gravity is a straight downward force, but because the path is tilted, gravity has a component that acts along the glide path. This component pulls the aircraft forward along the path, providing the driving force that helps it move forward and downward, which is then balanced by drag to maintain a steady glide speed. Lift acts perpendicular to the flight path, helping to support part of the airplane’s weight, but it doesn’t drive the forward motion. Since there’s no engine thrust in a glide, the forward motion comes from gravity’s component along the inclined path. The idea that gravity directly provides lift is incorrect, and the notion that gravity has no role or that it opposes forward motion doesn’t fit how a glide actually works.