Roller coasters
history of roller coasters
Roller coasters were started by Issac Newton 1642-1727. The earliest known kinds of roller coasters were ice covered wooden slides built in Russia in the 1400's. The first American roller coaster was built at cony island new York city in 1884.
About roller coasters
the roller coaster design
Roller coasters are made up of small open cars that speed along on sloping railway tracks.What makes them fun is the start,stop,or different movements. Any change in speed or in direction too. The forces that makes them move are gravity, the normal force the force that keeps you in a chair, and any other g force like gravity.