• Ground roll distance is how far the plane rolls after you land. Take off distance is how far the plane rolls before take off.
  • Ground roll is the distance required before the wheels leave the runway. Takeoff distance is normally the total distance required for the aircraft to depart and clear an obstacle of a known height past the end of the runway. For general aviation, takeoff distance is normally over a 50 foot obstacle (picture a tree at the end of the runway).
  • answer 2 is correct, "landing distance" is the distance you roll after landing. Answer 1 is wrong.

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