Hi List - How does one calculate the change in velocity of a bouncing ball if it hits an angled wall (not vertical or horizontal)? Edge detection & angle calcs are OK; The maths of bouncing is not %`) An example of what I am trying to achieve can be found at: http://www.chnexus.com/paths/v-path.htm (Awesome physics simulation stuff here) Thanks, Tom [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/LUJ/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]) Lingo-L is for learning and helping with programming Lingo. Thanks!]