Quote:
Originally posted by InfX708:
Like I said, it all depends on the point of observation and relativity.
And the fact that the question is worded badly.

Pretend there is *zero* friction, and the engines are off - if the conveyor belt moves in ANY direction, the plane is going to stand still. Isn't that the law of inertia?

Key here - ZERO friction - there is no external force to push the plane back if there is ZERO friction.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist