If there were two rocks on the moon and they were next to each other and they didn't do anything (because they were rocks) and they spent millennia upon millennia just rocking out and enjoying each others company and then one day an astronaut picked one of them up and filmed herself throwing it to demonstrate the behavior of projectiles in low gravity no atmosphere environments and then she got in her shuttle and left and the rocks were never next to each other again (rocks don't move),