# Average speed and average velocity?

Owais Iftikhar
Average speed and average velocity??

Hello
Dose a particle having a uniform circular motion may have some average velocity, although it is accelerating?? And how to find it? If yes, it has some average velocity then, what's its relation with average speed?
"IAM CONFUSED THAT THE PARTICAL VELOCITY IS KEEP ON CHANGING DUE TO CHANGE IN IT'S VECTOR'S DIRECTION SO CAN WE APPLY SIMPLE STRIGHT LINE MOTION FORMULA (CHANGE IN VELOCITY/CHANGE IN TIME) OR SOME SPECIAL FORMULA??"

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So, in the case of movement around half a circle, the average velocity is $$(v_f + v_i)/2 = (\mathbf{v} - \mathbf{v})/2 = 0$$
When a full circle is traversed, the final velocity will be v again, the same as the starting velocity, and in this case, the average velocity will be $$(v_f + v_i)/2 = (\mathbf{v} + \mathbf{v})/2 = \mathbf{v}.$$