A Car Travels Around a Curve of Constant Radius at a Constant

Multiple Choice

A car travels around a curve of constant radius at a constant speed. The direction of the car's centripetal acceleration is

A) horizontal.
B) vertical.
C) tangent to the curve, and points in the same direction as the car is moving.
D) radially inward.
E) unknown; more information is needed to work out the answer.