Thread: Life Pick 5 posters you'd like to have dinner with.
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Old 08-25-2009, 05:02 PM   #150
Donger Donger is offline
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Quote:
Originally Posted by BuckinKaeding View Post
I don't know why I'm still going.

If the plane had a rolling start, then the treadmill caught up to the speed of the wheels, technically the wheels and treadmill could be moving at the exact opposite velocity of eachother, yet the plane would still be moving forward due to momentum, right?
It would immediately begin to decelerate until its ground speed became zero. It's the same basic concept as DaFace's scenario above:

"that a plane could take off under its own power while a treadmill was under it and moving in the opposite direction"

In that scenario, the forward motion of the plane is precisely the opposite of the force being applied by the treadmill. Therefore, they cancel each other and the relative ground speed of the plane is zero = no lift = no flight.
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I think the young people enjoy it when I "get down," verbally, don't you?
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