Quote:
Originally posted by EK69
they like to idealize the situation as much as possible, so u can actually calculate it out.
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Idealizing a situation is fine, but when the question is going to require a ridiculous and flat out wrong assumption it is a bad question. There are many other ways in which you could present the same type of problem where you set up a system of two equations. The professor could have used the classic two trains traveling in opposite directions or maybe a problem involving a see-saw or something like that where you could neglect the wieght of the boards and friction.