Question

can the average velocity of a particle be zero when its average velocity is not zero?​

Answer 1

Hola mate here is your answer :-

Yes this is possible if a particle travels along a circular path. Its instantaneous velocity remains different (as particle has different orientation every moment though it may have same magnitude) but average velocity may remain zero for each completion of its round.

Hope it helps!!✌✌✌✌

Answer 2

Explanation:

Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide. In the later case calcium carbonate is derived from the mixture, forming a grade of product called "precipitated calcium carbonate,” or PCC.