Okay, here is another example...Originally Posted by LS2_KID
Take a match-box car and a piece of paper. Put the match box car at one side of the paper and push it across. While the car is rolling, pull the paper back very fast.
The car that you pushed has free rolling wheels like a plane. You pushing it is like a jet's engine pushing through the air. The paper that you pull backwards, is like the treadmill.
Now, when you pull the paper back (pull it back slow, pull it back fast, it doesn't matter), does the car stop or does it keep moving forward?
Guess what, it keeps moving forward just like the plane will move on the treadmill.
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