A 1.2×103kg car travels at 25m⋅s−1 around a circular curve of radius 50m that is perfectly banked so that no friction is required. What is the magnitude of the normal force exerted on the car by the road?
a) 2.7×104N
b) 1.2×104N
c) 1.9×104N
d) 1.5×104N