Consider a collection of a large number of particles each with speed v. The direction of velocity is randomly distributed in the collection. What is the magnitude of the relative velocity between pairs in the collection

Consider a collection of a large number of particles each with speed v

1.	Consider a collection of a large number of particles each with speed v. The direction of velocity is randomly distributed in the collection. What is the magnitude of the relative velocity between pairs in the collection
Answer» `2V, 4V` `3V, 3V` `5V,V` `4V,2V` ANSWER :D