is usually represented by the symbol omega (Ω or ω). The
direction of the angular velocity vector is perpendicular to the plane of
rotation, in a direction which is usually specified by the right hand rule
(counter-clockwise rotation).
Angular velocity describes the speed of rotation and the orientation of
the instantaneous axis about which the rotation occurs. The direction of the
angular velocity vector will be along the axis of rotation; in this case
(counter-clockwise rotation) the vector points toward the viewer.