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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.
Miller Lite
When the roller coaster is at its highest position and is not moving then its potential energy is highest
When the roller coaster is at its highest position and is not moving then its potential energy is highest
The roller coaster increases kinetic energy when its velocity is increasing.
The cars of a roller coaster reach their maximum kinetic energy when at the bottom of their path.
No, the roller coaster is not the only example of a closed energy system.
80% of the people screaming on roller coasters are doing it because it just comes out (don't be afraid to let it out) and it makes the ride fun. And I'm guessing that you are afraid of roller coasters but to answer your question it does, it gets all the butterflies away as you go down that first drop. My first roller coaster i remember that weird feeling in my stomach and once i started screaming it went away fast. try laughing too, but screaming works best (at least with me)
The model uses less energy than the real one does.
When the roller coaster is at its highest position and is not moving then its potential energy is highest
It depends on the roller coaster's height,speed,and location. :p
Potential energy is used when going up hill on a roller coaster. When it starts gong down the potential energy is converted to kinetic energy.