(Solved): The roller coaster car has a speed of vA = 36 ft/s when it is at the crest of a vertical parabolic t ...

The roller coaster car has a speed of vA = 36 ft/s when it is at the crest of a vertical parabolic track. The total weight of the car and the passengers is 310 lb . Neglect friction and the mass of the wheels. Determine the car's velocity and normal force the car exerts on the track when it reaches point B. Thank you!!