Samples:
http://webpro.host.adobe.com/people/jblas/momentum/momentum-scroller-sample-01.html
http://webpro.host.adobe.com/people/jblas/momentum/momentum-scroller-sample-02.html
http://webpro.host.adobe.com/people/jblas/momentum/momentum-scroller-sample-03.html
英文好的同学可以直接看原文:http://forum.jquery.com/topic/momentum-scrolling