Physics 2D engine in pure Vb.net

Hi, This is first 2D Physics engine in pure Vb.net (I think so as I could't find another so I wrote this one), inspired from APE engine written in flash by Alec Cove. Again as my other submissions I did all this to learn 2D physics and .net as well. [COLOR="Red"]please leave your feedback so that I can continue it further.[/COLOR] Platform: Visual Basic 2010 Source: attached Please go through my other submissions [URL="http://www.vbforums.com/search.php?searchid=3181502"]http://www.vbforums.com/search.php?searchid=3181502[/URL]