At an altitude of 6679 km above the center of the Earth the International space station can complete one orbit and 1.5 hours determine the average speed of the ISS explain why you should calculate speed in this case and not velocity
an object's speed tells you how fast it's going. Its velocity tells you how fast it's going in a certain direction. You use speed measurements in your daily life, but physicists depend on velocity measurements more frequently in their work.