According to Newton's first law of motion, an unbalanced force can change the state of motion of an object. If there is an unbalanced force acting on an object in motion, it can cause the object to accelerate in the direction of the force. This acceleration can either increase or decrease the object's speed, or change its direction of motion, depending on the direction and magnitude of the force. In other words, an unbalanced force can cause a change in velocity, which includes changes in speed or direction, thus altering the object's motion.
