Collision is of great importance in many modern sports, especially in table tennis. Research on collision should first pays attention to modeling the flight process. The paper analyzes the kinematic mechanics of collision in flight process for table tennis. It first discusses the great importance of modeling flight process for table tennis. Then, by means of the motion analysis, the force situation of the tennis ball in flight process is found out. On the basis of this, three basic assumptions are presented and the force analysis of flight process in three-dimensional coordinate system is conducted. At last, the model of collision in flight process is established by means of mathematical deduce. And the changing rules of velocity and distance are discovered.
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