Hey Guys a lot of people were asking me how to prove that centripetal acceleration is v squared over r. Well, i know quite a few people here might not know calculus, not that the calculus to prove it is very hard, but i prepared something for you guys. Its a beautiful proof which i like much more than any calculus proof. Its slightly amateurish because i've never really done this before. Hope it helps though, i think you can find the proof on wikipedia anyways. You can ask me if you guys need anything else.