During a roller coaster ride, your body is pushed, pulled, turned and even felt weight loss for a short time. All of this is done as the forces created by the roller coaster and gravity affect each other. Most roller coasters include a large number of peaks and valleys in order to make the ride more exciting. That's why so many people like roller coaster.When the roller coaster is pulled up the first hill, it gathers most of its"potential"energy. For the rest of the ride, you are basically falling through space. That's why all of the continued hills are smaller than the first one. If not, you wouldn't have enouge energy to get over the next hil.