1. A roller coaster travels up to its peak height before beginning its first giant dip. Neglecting frictional forces, how does the total energy (sum of potential energy and kinetic energy) compare from when it is at its peak height to when the roller coaster is halfway down the peak? The total energy is half as much when it is halfway down the peak. O a. The total energy is twice as much when it is halfway down the peak. O a. The total energy is the same at both instances. O a. The total energy is four times as much halfway down the peak