Quote:
Originally posted by XPLORx4:
Dude, explain how a conveyor belt can work against engines that push air.
The wheels are NOT frictionless.

The engines have to overcome that friction. But if they start to accelerate, the conveyor accelerates...cancelling out any forward movement.
_________________________
"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