As of 2017, the tallest roller coaster in the world is the Kingda Ka, located at Six Flags Great Adventure in Jackson, New Jersey. It stands 139 m tall and, at one point, the cars drop 127 m! Roller coasters are a great way to investigate energy. Look at the diagram of a roller coaster, and answer the following questions. Explain how energy is conserved in the roller-coaster ride. Include descriptions of at least one energy transfer and at least two energy transformations.