See the way that the ball remains still until an external force - the man kicking the soccer ball,- moves the ball into motion? This process is a part of Newton's first law of motion.
Newton's First Law of Motion: If there is no net force on an object, than that object will remain at a constant velocity, and if that object is at rest, then it will not move.
Newton's Second Law of motion explains how force, mass, and acceleration are all interconnected. When a force is applied onto a mass, acceleration is produced, and the more mass an object has, the more force it needs.