A headwind will reduce the ground speed needed for takeoff, as there is a greater flow of air over the wings. Typical takeoff air speeds for jetliners are in the 130-C155 knot range (150-C
180 mph, 240-C
285 km/h). Light aircraft, such as a Cessna 150, take off at around 55 knots (63 mph, 100 km/h).
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