A Car Travels on a Road That, If Viewed from the Side

Multiple Choice

A car travels on a road that, if viewed from the side, has a semicircular dip. When at the bottom of the dip, the occupants of the car feel as though they weigh twice their normal weight. What is the radius of the semicircle if the speed of the car is 27 m/s?

A) 37 m
B) 132 m
C) 149 m
D) 74 m