No, this is not for homework, I’m genuinely interested in stuff like this and I couldn’t find s lot online about this that explained it easy enough for me.
In: Physics
Classically, molecules generally moves in straight lines until they collide with other ones. When they collide, they change directions (and speed).
So you can pretty much imagine a billiards table without the walls. If the walls of a billiards table didn’t keep the balls within the table, where would they tend to go? Outwards from the center of the table. It helps if you think of a lot of balls within a billiards table rather than just 15.
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