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.
Another example of Newton's First law of Motion.
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.