How do they stop a roller coaster?

Roller coasters are stopped using a variety of methods, depending on the type of coaster and its design. Some of the most common methods include:

* Brakes: The most common way to stop a roller coaster is to use brakes. These brakes can be applied to the wheels of the coaster, or they can be used to engage with a track brake. When the brakes are applied, they slow down the coaster until it comes to a stop.

* Magnetic brakes: Magnetic brakes use magnets to slow down the coaster. These magnets are placed on the track, and they interact with magnets on the coaster's wheels. The interaction between the magnets creates a braking force that slows down the coaster.

* Eddy current brakes: Eddy current brakes use a spinning metal disk to slow down the coaster. The disk is placed between two magnets, and the magnets induce eddy currents in the disk. These eddy currents create a braking force that slows down the coaster.

* Water brakes: Water brakes use water to slow down the coaster. The water is sprayed onto the track, and it creates a friction force that slows down the coaster.

The type of braking system used on a roller coaster depends on a number of factors, including the coaster's speed, weight, and design.