Floor is an event in which you are tested on your tumbling skills and dance skills. Tumbling has alot to do with physics, and the teamwork between one and gravity. First one runs to gain speed, at the same time acceleration increases. Most tumbling passes begin with a round off, a round-off helps to gain speed, height, and force, along with changing the direction in which your body is facing in order to do a backwards tumbling pass. If one were to do a round-off backhand spring connacted to a full then the backhandspring would be used to gain more acceleration. If tumbling properly then after each trick you should have more monentum than the last. You use speed to increase the amount of force something has, the more force something has then the higher and further you can go, and the better and more advanced the trick can be.