Going up and down
the roller coaster would crack and break apart because of the velocity. It is to much for a roller coaster to handle.
I would prefer to ride on a roller coaster.
It would depend on the size and type of roller coaster.
A roller-coaster would go faster with more people in it because with moer people the better the ride alsothe people that are ridding will give the roller-coaster potential energy. A roller-coaster would go slower with an empty car will give the roller-coaster kinetic energy than with peolpe in it.
In the case of a roller coaster car, gravity itself is the basis of both potential and kinetic, the difference being that if something obstructs or controls the rate at which gravity can act to draw an object or body toward the ground then that something would be conserving potential energy. If gravity were allowed to act on the roller coaster car unimpeded then the car would be drawn straight to the ground so the relationship between potential and kinetic energy for a roller coaster is a directly proportional relationship between the distance between the track and the ground, where the slope of the track and initial speed of the roller coaster car form the initial input of energy; potential in the form of distance from the ground and kinetic in the form of velocity.
Well that really depends the earliest ride that would be close enough to a roller coaster would be an equivalent of a luge run.
If you think about this, you can figure it out. A roller coaster is a fast, scary ride. If something is like a roller coaster ride, it would be a very busy experience that is fun, but also slightly scary.
It would not move
According to Newton's first law of motion, a body will continue in its state of uniform motion along a straight line when there is no net force acting on it. That means if the roller coaster is under no external forces, it would move in a straight line tangential to the track. However, there should be forces acting on it because its direction of motion changes. Assuming that the mass of the roller coaster is, it is moving at a velocity, and the track is circular with a radius, the centripetal force required would be
When you are going down you have the most potential energy because the roller coaster and the speed is helping you go faster!
I would suggest you to change your system. That might be weaker to run this game!
At the peak.