Hey, I'm working on a Scratch Tennis simulator, but I can't really figure anything about equations on the ball moving. I've tried my own, and looked at other projects, but I can't seem to find anything. DO NOT say "use wikipedia". If I could actually understand the scientific babble there, I would use it, but not now. I already know a couple things, so I'll just substitute the ball's mass as 10 grams. Any help?
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As long as you cover the basics, I don't think it matters too much. I doubt a single Scratch projects so far has completely accurate physics. Just stick with the simple rules:
1. Gravity makes things fall and the longer they fall, the faster they fall
2. An object it motion will stay in motion, unless acted upon by an outside force (gravity, wind, friction)
3. Energy can not be lost or gained, just transfered to other objects (the tennis ball's energy will steadilly grow shorter, but a tennis racket might take some of that energy and redirect it).
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If your going for full on physics that have equations that are hard for seniors Scratch probably can't help you. Why don't you start with the basics and add complex things as you see fit?
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