What force slows down a roller coaster and eventually brings it to a stop?

Once the cars are put into motion (potential is allowed to be converted into kinetic energy), they will not stop again until the brakes are applied at the end of the ride. The cars are slowed (negative acceleration) eventually to a stop, because of unbalanced forces due to friction acting on them.



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As it is rapidly transformed into kinetic energy of motion, the forward momentum of inertia cannot be undone. The coaster will roll on indefinitely, or until of course the end of the track, where unbalanced forces like friction between the track and the wheels slow the coaster ultimately to a stop.

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The force of gravity pulling a roller coaster down hill causes the roller coaster to go faster and faster, it is accelerating. The force of gravity causes a roller coaster to go slower and slower when it climbs a hill, the roller coaster is decelerating or going slower.

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A roller coaster does not have an engine to generate energy. The climb up the first hill is accomplished by a lift or cable that pulls the train up. This builds up a supply of potential energy that will be used to go down the hill as the train is pulled by gravity.

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In a roller coaster loop, riders are pushed inwards toward the center of the loop by forces resulting from the car seat (at the loop's bottom) and by gravity (at the loop's top). Energy comes in many forms. The two most important forms for amusement park rides are kinetic energy and potential energy.

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Roller coasters are driven almost entirely by inertial, gravitational, and centripetal forces. There are three main components to the typical roller coaster: chain lift, catapult-launch lift, and the brakes. The chain lift is the component that pulls all the carts to the “top” of the roller coaster.

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At the end of the ride friction between the wheels and the track or wheels and their brakes slowly wins out and the cars come to a halt. The harder the brakes are applied the more rapidly the coaster will come to a stop, also known as deceleration.

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Roller coasters continuously exchange potential (stored-up) energy and kinetic (motion) energy. Going up, kinetic energy is turned into potential energy. Going down, potential energy is turned into kinetic energy.

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Programmable logic controllers, usually three of them, monitor every aspect of a coaster's operations. They regulate the ride's speed, ensure that trains never come too close to one another, and alert human operators to technical glitches or track obstructions.

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Although coasters can definitely go faster, they're limited by the acceleration those higher speeds would require. Roller coasters reach their peak speeds in a matter of seconds.

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Kinetic energy - the energy of motion - is dependent upon the mass of the object and the speed of the object. The train of coaster cars speeds up as they lose height. Thus, their original potential energy (due to their large height) is transformed into kinetic energy (revealed by their high speeds).

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The acceleration along the track is always equal for every car, but for each car that acceleration aligns with the hills/gravity in different ways. As the front car crests a hill, the coaster is decelerating; the front car is being pulled backward by the other cars.

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The only factor that affects the final speed of the roller coaster is the total height lost while the height of the second hill does not affect.

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Aerodynamic drag is a force that opposes the coaster car's motion through the air and is generated by the difference in velocity between the moving car and the air it's passing through. Drag force depends on velocity, as drag acts perpendicular to a surface therefore the surface area has a large impact.

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When you go around a turn, you feel pushed against the outside of the car. This force is centripetal force and helps keep you in your seat. In the loop-the-loop upside down design, it's inertia that keeps you in your seat. Inertia is the force that presses your body to the outside of the loop as the train spins around.

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