When the entire group of forces acting on an object is balanced, the vector sum Β
of the forces is zero, and the effect of the group of forces on the object's motion Β
is identical to the effect of no force at all. The object continues in constant uniform Β
motion. Β
To state the outcome of the situation in three different ways: Β
-- The object's acceleration is zero. Β
-- The object's velocity is constant. Β
-- The object's speed and direction of motion don't change. Β
The direct answer to the question is: Nothing happens to its motion.