* Balanced forces: When forces acting on an object are equal in magnitude and opposite in direction, they cancel each other out. This results in no change in the object's motion (either at rest or moving at a constant speed).
* Unbalanced forces: When forces are unequal or not directly opposite, they cause a change in the object's motion. This change could be a change in speed, direction, or both.
In your example, you're applying a force to an object to stop it. This means the force you're applying is greater than the forces opposing your push (like friction). Therefore, the forces are unbalanced, leading to a change in the object's motion (it stops).
