What effect do balanced forces have on the motion of an object?

Balanced forces occur when two or more forces acting on an object are equal in size but opposite in direction, resulting in a net force of zero. When this condition is met, the object will not experience any acceleration, meaning it will maintain its current state of motion, which could either be at rest or moving at a constant velocity. This principle is described by Newton's First Law of Motion, which states that an object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force. Thus, the correct assertion is that balanced forces result in no change in motion, affirming that the object remains in a state of equilibrium.

In contrast, acceleration occurs when there is an unbalanced force, which would not apply here, and the other choices imply effects that can be observed only under conditions where forces are unbalanced, leading to acceleration or directional changes in motion, rather than maintaining the status quo that balanced forces ensure.