The roller coaster below has a mass of 450 kg. 10.0 m v = 15.0 5.00 m a. What is the mechanical energy of the coaster? b. What is the speed of the roller coaster at the 5.0 m hill of the coaster? c. At the end of the coaster, the height is 2.0 m off the ground, it takes 50.0 m to come to a complete stop. What force must be used to achieve the roller coasters stop? The roller coaster below has a mass of 450 kg. 10.0 m v = 15.0 5.00 m a. What is the mechanical energy of the coaster? b. What is the speed of the roller coaster at the 5.0 m hill of the coaster? c. At the end of the coaster, the height is 2.0 m off the ground, it takes 50.0 m to come to a complete stop. What force must be used to achieve the roller coasters stop?