# Circular Motion #8

**Classical Mechanics**Level 3

A particle moves along the circle \( x^{2 } + y^{2} = r^{2} \) in the \( xy \) plane. It is known that the particle can move from \( (0, r) \) to \( (r, 0) \) without leaving the first quadrant. Which of the following vectors point in the same direction as the angular velocity of the particle, \( \vec{\omega} \) ?

Note: In this problem, we are using the Right-Handed Coordinate System

This problem is part of the set - Circular Motion Practice