Why is the motion of a circulating fan non-uniform?

When we switch ON the fan, it starts from rest, its velocity increases and reach to the maximum value, since velocity is increases, so its motion is non uniform.
AS fan moves in circular motion , so its direction of velocity changes at each and every point so it is an accelerated motion hence non uniform motion.

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Its bcz we can see it clearly that when we on the fan it's speed is very low and later speeds up....and too ..when we off it the fan is at great speed and we can see that it sppeds down ... this will never happen if the fan is uniform...thus clearly we can understand that it is non-uniform

thanks

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