When two unbalanced forces are exerted in the opposite direction, the object will accelerate in the direction of the net force. The net force is the vector sum of the two forces, and it is the force that is responsible for causing the object to accelerate.

For example, if you push a book with a force of 10 Newtons to the right and someone else pushes the book with a force of 5 Newtons to the left, the net force on the book will be 5 Newtons to the right. This means that the book will accelerate to the right at a rate of 5 meters per second squared.

The acceleration of the object will depend on the magnitude of the net force and the mass of the object. The greater the net force, the greater the acceleration. The greater the mass of the object, the smaller the acceleration.

In the case of the book, the acceleration will be 5 meters per second squared. This means that the book will travel 5 meters in the first second, 10 meters in the second second, 15 meters in the third second, and so on.

The book will continue to accelerate until the forces acting on it are balanced. In the case of the book, the forces will be balanced when the book reaches a speed of 5 meters per second. At this point, the book will continue to move at a constant speed until another force is applied to it.