What is the average speed of a roller coaster?

The average speed of a roller coaster varies depending on the specific coaster and its design. Some coasters can reach very high speeds, while others may be designed for more moderate speeds. As a general reference, the average speed of a roller coaster can range from around 20 to 70 miles per hour (32 to 113 kilometers per hour). However, some roller coasters can go much faster, with some reaching speeds of over 100 miles per hour (161 kilometers per hour). The fastest roller coaster in the world is the Formula Rossa at Ferrari World in Abu Dhabi, United Arab Emirates, which has a maximum speed of 149.1 miles per hour (240 kilometers per hour).