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[Mainerunr]

We all agree that the plane could take off if the treadmill speed equals -plane speed, the details of the real wording have been hashed out. Wheel speed is only relevant here if you're using wheel speed to set the speed fo the treadmill because that will set the speed of the plane relative to air. The plane must still reach liftoff speed to get into the air and, if wheelspeed = treadmill speed, the plane is not moving relative to the air...plane velocity relative to air is the only thing that matters for takeoff.

I'm done with this one. Group A not understanding the subtle difference in details being discussed by group B is not getting anywhere.