While trying to explain a physics concept, a student said, "stuff keeps doing what it's doing unless something messes with it." what law was the student summarizing? explain your answer. your answer when a soccer player kicks a ball, the ball accelerates. explain what causes this acceleration in terms of forces. your answer describe three examples from sports in which a force changes the velocity of an object or a person. your answer explain which has greater inertia; a speeding car or a jet airplane sitting on the runway. your answer do forces always cause motion, explain? your answer