How unbalanced forces change the velocity and acceleration of objects by completing the cause-and-effect graphic?

An unbalanced force causes a change in velocity by accelerating an object in the direction of the force. This acceleration is directly proportional to the magnitude of the force and inversely proportional to the mass of the object. In this cause-and-effect relationship, the force is the cause, leading to the effect of acceleration and a change in velocity of the object.