The object will try to stop a stop as long as there is no external force do. Best mobile object is moving in a straight line with constant speed, as long as there are no external workers do as well.
A stationary body is trying to stand still. As long as there are no external forces. The object will move in a straight line at a constant velocity. As long as there are no external forces as well.
A stationary object will stopped. As long as no external action. The moving object is moving in a straight line at a constant speed. As long as no external action as well.