There was only a few things that would make a roller coaster design dangerous for the cart. One example would be how pointy the angle was for of each hill. The more pointy the hills, the more dangerous the landing of the cart would be. Another example would be the height of the loop of the roller coaster. The loop should be high enough so that the cart could travel with more energy.
2. Describe a roller coaster design that the cart was able to travel through safely. A roller coaster has to be able to nice and smooth without stopping to abruptly. Another way a roller coaster design that would move the cart safely would be the height of the loop. There