Why can headwind assist planes when taking off and landing? Why does tailwind not help with takeoff?
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Lift is created by the speed of the air relative to the wing. If I am going 50mph on the runway in still air, I get exactly as much lift as going 25mph on the same runway with a 25mph headwind.
If I have a 25mph tailwind, I would need to go 75mph on the runway to get the same amount of lift.
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