Hey Dad guess what, i beat Jack in a tug of war competition today!
Jack said the game was unfair, why do you think he said that?
Well that was probably because you and Jack are consiedered unbalenced forces.
whats and unbalenced force?
Well... unbalenced forces are forces that always have a net force greater than zero, always cause a change in motion, and always cause acceleration. The reason you and Jack are unbalenced forces is because you are stronger than Jack, making it easier for you to win.