A car travels in a circle with constant speed.The net force on the car is
A)directed forward,in the direction of travel.
B)directed toward the center of the curve.
C)zero because the car is not accelerating.
D)none of these

Question

Quizplus · Accepted Answer

Since the car is moving in a circle with constant speed, it is accelerating toward the center of the circle (centripetal acceleration). According to Newton's Second Law, there must be a net force acting on the car in the direction of the acceleration. This net force is directed toward the center of the curve, which is choice B.

A Car Travels in a Circle with Constant Speed