A roller-coaster car has a mass of 512 kg when fully loaded with passengers. At the bottom of a circular dip of radius 49 m the car has a speed of 14 m/s.

A. Calculate the centripetal acceleration, ac, experienced by the car. Units: m.s-2 B. Calculate the magnitude of the net centripetal force acting on the car. Units: N C. Calculate the magnitude of the force of the track on the car at the bottom of the dip. Units: N