Give an example of a force exerted on an object that causes it to move. Are the forces balanced or unbalanced?

Two teams playing tug of war with equal force; the forces are balanced.
A car parked on a hill with the handbrake engaged; the forces are balanced.
• A book resting on a table; the forces are balanced.
A person pushing a swing; the forces are unbalanced.

A person pushing a cart; the forces are unbalanced.