Answer:
With the little knowledge of this subject I'll try to do my best
first the risks of roller coasters:
with riding the roller coasters, the Person in the ride will experience increasing heart speed, an irregular heartbeat, and this brain is deprives the blood and oxygen,
the possibilities of a malfunction, or falling off, leading to an injury or even death
There tends to be at least 4 deaths yearly
Now, to the science part,
Physics of this rolly coasters
Either magnetic or machine and tracks this ride requires the help of gravity to operate, using wind arcross these tracks, using alot of G force (Unit of acceleration)
sorry if its not good, I couldn't find the sections you had
