Links

Momentum Simulation
http://www.walter-fendt.de/ph14e/collision.htm

See there is something educational on the YouTube.  Here is information 
posted by UC Berkeley.  Specifically look at "Physics for Future Presidents" 
for extra explanations and interesting info.
http://www.youtube.com/ucberkeley

For the Optics Webquest, this is the first page you should need.  Click 
on "The Role of Light to Sight" and proceed.  When you get to the end of the 
information on this page, click on the next link on the RIGHT side of 
the page.  Continue to do so until you finish all of Lesson 1.  Then do the 
same for Lessons 2-4.
http://www.glenbrook.k12.il.us/gbssci/Phys/Class/refln/reflntoc.html