Quote:
Originally posted by Suneet
A a parabola just a u-shape. A football is more of an ellipse. An ellipse is um... the intersection of a right circular cone and a plane that's offset by an angle from being parallel with the base of the cone. There could be footballs moving in parabolas...
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Itīs wrong because the U sape has straight lines at the top, and a parabola never becomes straight, because it goes turning, turning, turning into the infinite.