View Single Post
Old 10-09-2012, 11:55 AM   #370
sureshs
Bionic Poster
 
Join Date: Oct 2005
Posts: 31,130
Default

Quote:
Originally Posted by toly View Post
For explanation of the ball spin direction see please picture below. Observer looks at the top of the ball.



I copied the picture from Rod Cross article, “Physics of the Tennis Kick Serve”, http://twu.tennis-warehouse.com/lear.../kickserve.php
I am not sure what you are saying. In a topspin kick serve, the strings and the ball move in the same general rotational direction.
sureshs is online now