2./3.This summer one of the things i did scientific was that i went on roller coasters in 6 Flags in Massachusetts. I think that roller coasters are scientific because they have to do with forces and motions, friction, and + and - G's. I think that the one that is the most scientific about all of the 3 are forces and motion. I think this because there is a lot o force being put on you as you are riding the roller coaster, for an example, when you go slowly up, and you stop at the top and then you shoot down to the ground you feel like you are flying, but all of a sudden when you go straight up you are being pushed down and you can feel your face sagging, thees things are also known as + and - G's.
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