2.The figure below shows a roller-coaster car moving around a circular loop of radius R=10.0m. (a) Using Newton's second law, determine the speed must the car have at the top of the loop so that it will just make it over the top without any assistance from the track. (b) Using the law of conservation of mechanic energy, determine the speed will the car subsequently have at the bottom of the loop. (c)Determine the normal force on a passenger at the bottom of the loop. equation on the horizonta for static (d)Determine the magnitude bot R