The surface it's on, or the surface next to the surface it's on? Not stated.

OK. It's simpler to have one point of view.

Are you saying the question is written from one single point of view?

No, if it's not stated you can't chose what to relate it to, that's adding to the question. It can only be relative to where it was if it moved, which the question states it did. :litebulb:

It was on the treadmill.

Ask the question. The point is: The question can only be what it is, nothing more.

It dosn't matter what the speed is because it is 'matched' by the treadmill. There is an equal and opposite momentum.


That's what the question said.

...> It the treadmill is made to match the forward speed of the plane, only in the opposite direction.

It doesn't have to. Only one of the interpretations is physically possible. Reality isn't an additional assumption.

The question doesn't ask you to explain how the hypothetical treadmill accomplishes what is stated.

Occam's razor.

I choose not to include a magic treadmill.

As Flint is saying, there are two different ways to look at the problem. I think that scenario #1 is difficult to achieve in the real world.

Scenario #1 is not possible. That is something that you have to factor in to the question. Like a math proof, if you follow one assumption, and it leads to a contradiction, you can eliminate that possibility.

Ok, first of all, don't ask Cecil. Beanie may know the answer, but Cecil won't


http://www.cartoondepot.com/pages/im...0&%20Cecil.jpg

Now, concerning Labrat's ass ... I mean bicycle analogy, one thing is missing. The airport moving walkway would speed up to counteract the push that you give the bike.

I'm so out of this thread once it passes the 200th post. mark my words.

I'm so tempted to make six consecutive posts, but I'll be nice and leave it at one.