When an unbalanced force acts on an object, it causes the object to accelerate. The acceleration is directly proportional to the net force acting on the object and inversely proportional to the mass of the object.

In simpler terms, if an object has more force acting on it in one direction than in the opposite direction, the object will move in the direction of the greater force. The amount of acceleration depends on how much more force is acting in one direction than in the other.

For example, if you push a book across a table with your hand, the book will accelerate in the direction you are pushing it. The acceleration of the book will depend on how hard you push it. If you push it harder, it will accelerate more quickly.

If you were to push the book with the same amount of force in the opposite direction, the book would not move. This is because the forces would be balanced and there would be no net force acting on the book.

If you were to push the book with a greater force in the opposite direction, the book would accelerate in the opposite direction. The acceleration of the book would depend on how much more force you pushed it with.