You can use the link to go to Paper Rollercoasters. They're not quite free ($20), but you can download them right after your purchase and start building right away.
download free roller coaster 3
Goliath Roller coaster at sex flags in Quebec.
yes
games4theworld.org
In a free body diagram of a roller coaster, the forces acting on it are gravity, normal force, friction, and air resistance.
The roller coaster filmed in the new Free Credit Report commercial is the "Goliath" at Six Flags La Ronde in Montreal, Quebec.
The internet
You can download it here: http://download.cnet.com/Roller-Coaster-Tycoon/3000-7551_4-10026882.html for a 40 minute free trial and then you can purchase it for $20.
there is not really that are out there but you can get a demo online
Nope
To play RCT you have to purchase it. It cannot be downloaded for free.
You have to buy the game where ever you try to get it.