what is the direction of alpha with arrow if the magnitude of the angular velocity is decreasing in time?

If the angular velocity continues decreasing in magnitude over time, the direction of alpha with the arrow will be parallel to the plane of rotation.How to calculate the angular velocityThe angular velocity (w), a vector quantity in circular path, is determined by dividing the angular displacement (), also a vector quantity, by the change in time (t). Speed is equal to |w|R and is calculated by dividing the arc length travelled (S) by the change in time (t).Is the angular velocity uniform throughout?Every point on an object that is revolving about an axis has same angular velocity. The tangential velocity of points distant from the axis of rotation is, nevertheless, different from that of points closer to a axis of rotation.To know more about angular velocity visit:https://brainly.com/question/1980605#SPJ4