What is the scientific definition of net movement?

When a star can't hold its own weight what happens? What is a high concentration of the other metal in the mesosphere? Is there a natural disaster starting with d? What planet receives light in the shortest time? General phyics question Does a wall exert a greater force on an object if it bounces or sticks? Is the metric system the standard unit of measurement in the us? Why is peritonitis more likely in women than men? What actions should be taken by someone who had inhaled a chemical agent? What does the word temporal? What is the name of the large island group off the west coast of the subcontinent near the equator in which ocean is it located? Gene therapy is potentially dangerous to the recepient? Is there snow in strawberry ca? What causes water particles to split into hydrogen and oxygen? Which characteristics do the modacrylic flame retardant fabric have? Can creatine cause bladder problems? How do we get carrots out of the ground? What is the number of contour lines that you would need to show a change in elevation of 1000 feet on a map with a contour interval of 200 feet? Where do earthquakes occur the most - near plate boundaries or far away from plate boundaries? All living organisms are composed of one or more cells? What is the term for the value that indicates the number of protons for an atom of a given element?