What's the difference between velocity and velocity in physics?
Speed has no direction, but only size. It is the ratio of the distance △ s that a moving object passes through and the time △ t that it takes to pass through. Speed has size and direction. It is the ratio of the displacement △ s that a moving object passes through and the time △ t that it takes to pass through. For example, a person ran a 400m circle around the playground and spent 1