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Originally Posted by clevalley  Damn - now I am going to have to read! 
Or go talk to one of my Aerospace Engineers...
I look at this as the plane is trying to move forward @ 500, but the contact point for it to move forward, its wheels, was moving 500 in the opposite direction not allowing the plane to move forward because it cannot - but my bull-head is stuck with a picture and concept so I have to go and investigate 
How in the heck did we get here?  |
think of it this way.
take a small model plane and go on down to the gym of your choice.
go to the treadmill and turn it on as fast as it will go.
now, sit next to the tread mill and see if you can with your hand, put the wheels of that model plane on the tread and push the plane in the opposite direction that the treadmill is running.
when you discover that you can, imagine your hand is the engines on a plane and that the actual speed of the plane is relative to the earth, and not the treadmill underneath it.