| Definition: | axial vector quantity describing the rotation around an axis, with magnitude , where is the plane angle change during the infinitesimal time interval with duration dt, and with direction along the axis for which the rotation is clockwise NOTE 1 In an inertial frame, the angular velocity does not depend on the chosen coordinate system provided that the orientation of space is kept (either right-handed or left-handed). NOTE 2 The coherent SI unit of angular velocity is radian per second, rad/s.
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