The diagram below shows several points along the path of a single roller coaster car as the car travels on a track. Point A is the starting point for the roller coaster car. At which point will the car have the most kinetic energy?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action