"The Physics Classroom" !! Here is a Multimedia Physics Studio that lists many, many topics related to physical science. Scroll down the list to find the topic we are currently studying. http://www.physicsclassroom.com/mmedia/index.cfm
this is a TERRIFIC source of information about rollercoaster physics! Scroll down to the bottom and click to learn more about the history of rollercoasters! http://www.learner.org/interactives/parkphysics/coaster.html
Here is a complete collection of rollercoasters from around the world! http://www.ultimaterollercoaster.com/
Take a look at this website which provides information aobut building your own rollercoaster. Be patient - this one takes a few moments to download - but it's worth the wait! http://www.funderstanding.com/coaster
Be able to use interactive features to help design your very own rollercoaster! http://www.learner.org/interactives/parkphysics/coaster/
TLC article on how rollercoasters work. http://tlc.howstuffworks.com/family/roller-coaster.htm
A searchable database of rollercoaster statistics covering more than 450 rides. http://www.rcdb.com/