2) A roller coaster designed for a major law suit has a section taken out at the top of the second are of the track such that the car just barely makes it to the other side. If the radius of curvature , R, is 6 m find : 2R a) the velocity of the car at the top of the upper arc and at the bottom of the lower arc. ( no you dont need the mass for part a) or b) ) b) if the car is released from rest, the minimum height "h" that will result in the condition above. c) if the mass of the car plus rider is 500 kg find the minimum force the bottom of the are must be able to support. (Show all work. Draw the FBD as needed. Write down any equations or formulas you may have used. Highlight your answer(s).)