The 1980's.
For plain entertainment
paper mache
to tell you the truth i dont know
Yes, but only if they are poorly built...
so your life can be more fun and interesting
There is no answer to this question! Roller coasters are built all the time, around the world!
According to Roller Coaster Database (www.rcdb.com) there are 3364 roller coasters in the world, 768 of which are in North America. But those numbers change every time a coaster is built or demolished, which can happen quickly.
It is believed that the first roller coasters were built in the late 18th to early 19th centuries in Russia and France. These coasters were based on "Russian Mountains", sled rides on hills of ice. The first modern roller coaster was patented in 1872 by John G. Taylor. A ride based on his design was built at the now-closed Savin Rock in West Haven, CT
they were in batesville Indiana the first was made by Ryan kent jr
Roller Coasters originated from ice slides that were built in Russia in the 1400's.
The latest roller coaster at Cedar Point is Gatekeeper. Gatekeeper opened in 2013 at Cedar Point. There are no other roller coasters being built or planned as of now.
Roller Coasters go fast because they use gravity to their advantage. Because the cars weigh a lot, they fall at very high speeds from high in the air. Some of the new roller coasters being built also are propelled forward using the force created by high powered magnets.