Final answer:
When the net force on an object is zero, the object stays in its existing state of motion, either at rest or moving with a constant velocity. This concept is connected to Newton's First Law of Motion, the Law of Inertia.
Step-by-step explanation:
When the net force acting on an object is zero, the object's motion remains constant. This is directly related to Newton's First Law of Motion, also known as the Law of Inertia. This law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. In your case, with a net force of zero, there are no unbalanced forces, therefore, the object will continue moving at its current velocity or remain at rest, depending on its initial state.
Learn more about Newton's First Law of Motion