Research is to identify some kinematic variables for certain stages of performing the two backward somersaults with a tuck on the floor exercise apparatus. The authors used the descriptive method, employing video recording and biomechanical analysis, due to its suitability for the nature of the study. The sample was selected intentionally from the best gymnast in the Arab Republic of Egypt, who is a member of the national gymnastics team, performing the two backward somersaults with a tuck on the floor exercise apparatus. The main results of the study showed that the average horizontal force was 2016 Newtons with a standard deviation of 135 N, the average vertical force was 5555 Newtons with a standard deviation of about 32 N, the average resultant force was 5911 Newtons with a standard deviation of 43 N, and the average angle of force application was approximately 70 degrees with a standard deviation of 1.2 degrees.