Certain roller coasters hold records for being the tallest or for being the fastest. One of those record-breaking roller coasters is the Kingda Ka. The Kingda Ka is the tallest steel roller coaster and the second fastest steel roller coaster in the United States available for the public. “This upside down U-shaped track bolts up 45 stories in the sky—that’s 456 feet high!” (Six Flags). At the pinnacle of the roller coaster the cart possesses a lot of potential energy which converts into kinetic energy to finish the rest of the roller coaster. Pretending that an empty cart on the Kingda Ka is 650 kilograms then there is approximately 903,500 joules of total mechanical energy. The record for tallest wooden roller coaster goes to the T Express
