Question

two examples of unbalanced force

Answer 1

Any two forces acting on each other, which are not equal and opposite ( thereby causing motion ) are unbalanced forces. For example, when you push a wall with a force, neither you nor the wall moves. The wall applies an equal amount of force in the opposite direction. This is an example of balanced force.

Answer 2

Two examples of unbalanced forces are the box moving due to application of more force than the friction