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I'm giving myself a headache trying to find the math for part 2. The basis for the math might be physics, but it's definitely math, and as far as I'm concerned, a major issue! (not that a tag would enlighten me on the math required, but to figure it out I need a refresher on calculus, not physics)
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It is more a suggestion than an issue:-) and if a tag needed to be added I think it would be more physics than mathematics.