Analytical study of some kinematic variables and their Relationship to the ball's launch speed for the smash serve skill in volleyball

Abstract

          The main objectives of this research are to identify the relationship between the variable (velocity of the ball) and some kinematic. Moreover, to identify the extent of the impact of these variables. The researcher deliberately selected the sample and the selected sample (7) players from the Baghdad University team participating in the Iraqi Universities Championship 2025. and it represented (50%) of the community of origin. The main experiment conducted on (10/2/2025). The results analyzed and the kinematic variables. Extracted through the Kenova program. The extracted kinematic variables were (the height of the ball's starting point, the angle of the ball's starting, the angles of the elbow and shoulder, etc…). He used the statistical program (Spss) to extract the results. that the variables related to the angles (elbow and shoulder) have a significant role in the process of transferring kinetic energy in the two back-weighted stages and the moment of hitting the ball. The researcher recommended the trainers and those in charge of the Baghdad University team to emphasize the skill training that works to develop the performance, the need to benefit from the kinetic transfer of the batting arm in order to gain energy that it needs to hit the ball.