Hey I'm a skateboarder and been skaten for a while and I have recently been trying to spin as many times. So what do I have to do to keep my speed and momentome? Also is there a rule for momentome that applies to everything? By the way my I'm in Physics but my teacher is a crazy old black lady and all she does is give us homework and then the next class we spend a whole 90 minutes doing it and its only like 10 questions. So does anybody know of any websites that tell you all of the propertive and equations and stuff that apply to Physics because I'm relly interested in who all this stuff works.