roller-coaster, then slightly rolls up again, and flies off the track in projectile motion, which I called parts A and B. Next, as the marble flies, it lands into a cup that is taped onto a car. I called this parts B and C. This creates a perfectly in elastic collision. The momentum of the marble makes the car roll down a track and lands into a cup that is attached to an Atwood’s Machine. I called this parts C and D. Later, when the car lands into the cup that is attached to the Atwood’s Machine…
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