Aloop de loop track is built for a 938-kg car. It is a completely circular loop - 14.2 m tall at its highest point. The driver successfully completes the loop with an entry speed (at the bottom) of 22.1 m/s. a. Using energy conservation, determine the speed of the car at the top of the loop.
b. Determine the acceleration of the car at the top of the loop.
c. Determine the normal force acting upon the car at the top of the loop.