A car goes around a circular curve on a horizontal road at constant speed.What is the direction of the friction force on the car due to the road?
A)tangent to the curve in the forward direction
B)tangent to the curve opposite to the direction of the car's motion
C)perpendicular to the curve outward
D)perpendicular to the curve inward
E)There is no friction on the car because its speed is constant.

Question

Quizplus · Accepted Answer

In this situation, the friction force will act inwards towards the center of the circle, perpendicular to the curve. This force is necessary to provide the centripetal acceleration required to keep the car moving in a circle at a constant speed.

A Car Goes Around a Circular Curve on a Horizontal