It must be noted that it is meaningless to talk about the velocity of the arm as such. There is a special term for that, called angular velocity. The pitcher releases the ball. We assume that he does so at his fingertips. The velocity of his fingertips is the resultant velocity, which is the vector sum of all his velocities that is the velocity due to angular motion, translation velocity, and also the velocity of the wrist, when it does the back and forth motion.
Transnational velocity loses meaning in Baseball, since that pitcher has to be stationary.
But in Games like cricket, even the velocity of the bowler when he runs in has to be considered. Make sure to include the above question in your e-mail. All rights reserved. Please, read our legal info before using this site.