Quote:
Originally Posted by CoolMikey
1. Imagine you are a person running on a treadmill at 5mph, and treadmill is set to 5mph. Clearly you would be stationary, that's the whole point of a treadmill that you exert energy, while not moving. No?
2. Now, simply replace yourself running, with an airplane. What would cause the airplane to "take off" if it's stationary, like we established in previous step?
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You should go to the school, man. The 6th grade class of basic physics is what you really need
A plane is not a running human and not a car. It doesn't push itself using ground. It uses air as a point of force application. Just imagine a toy car at a treadmill which is tied by a rope to your hand. You stay in front of that toy car and pull it in your direction. Will it move to you or it will move backwards?
Hint: that toy car just like any plane doesn't use its wheels to move, so it doesn't care where the ground/treadmill moves to.