if you mean on the train, then no, rollercoasters aren't driven by engines. they are mostly driven by gravity. But, if it's launched , then it does use an engine to accelarate, but only the first part. the only other motor on a rollercoaster is the motor that drives the chain lift, provided that it has one. none of these however, are on the train (where you sit/stand while riding)
rollercoasters are really fun
No, you're safe on them.
rollercoasters
Rollercoasters
Rollercoasters
Thousands and thousands and thousands............
Rollercoasters
Yeah. He does. He went on some rollercoasters with Selena Gomez and he was more scared than he was though. haha :) Gotta love Bieber!
The highest g's known on rollercoasters are 4-5 g, on rollercoasters at the likes of six flags.
there are 65 rollercoasters
Rollercoasters and snakes
Rollercoasters sometimes use magnets to launch and accelerate it. Also, they are sometimes used for braking the coaster. Sources: common knowledge (for me) (BTW I'm 11)