An object moving in a circle at constant speed:
A)must have only one force acting on it
B)is not accelerating
C)is held to its path by centrifugal force
D)has an acceleration of constant magnitude
E)has an acceleration that is tangent to the circle

Question

Quizplus · Accepted Answer

An object moving in a circle at constant speed is indeed accelerating because its velocity vector is constantly changing direction. This acceleration is always directed towards the center of the circle, known as centripetal acceleration, and has a constant magnitude if the speed is constant.

An Object Moving in a Circle at Constant Speed