This sensation is caused by zero/negative g-force which occurs when you accelerate downwards at a rate faster than natural freefall, so in this case you are being pulled downwards from the top of the hill faster than than a natural freefall.
Well, Engineers use chains that carry carts to the top. On a typical roller coaster chains are used as they are better and safer to use than any other way.
When your body is traveling in a straight line it wants to continue going in a straight line, but the coaster car is not traveling in a straight line and it pulls you down. See related link.
Your body tends to continue going up when the ride moves down the hill.
Negative G-force.
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i think because the of friction
on a roller coaster what is the motor called that lifts you up on the first hill
The word "coaster" in roller coaster refers to the method of travel. Roller coaster trains are not powered. Instead they coast from one hill to the next on a set of wheels (or rollers), hence the name.
The roller coaster does not have kinetic energy at the top of the hill
100 yards
When the roller coaster is at its highest position and is not moving then its potential energy is highest
at the bottom of the hill
That depends on the ride .
big ball sack
A hyper-coaster is a large roller coaster that has a lift hill height of at least 200 feet. A giga-coaster is larger, with a lift hill of at least 300 feet.
it would be the energy that is slowly increasing
yes