Final answer:
A balanced force is when two equal forces act in opposite directions, resulting in no change in motion. An unbalanced force is when unequal forces act on an object, causing a change in motion.
Step-by-step explanation:
Balanced force: A balanced force is when two equal forces are acting on an object in opposite directions, resulting in no change in motion. When the forces are balanced, the net force on the object is zero.
Unbalanced force: An unbalanced force is when unequal forces act on an object, causing a change in motion. When the forces are unbalanced, the net force on the object is not zero, resulting in acceleration or deceleration.
For example, imagine pushing a car stuck in the snow. If you push with the same force in the opposite direction that the car is stuck, the car won't move. This is an example of balanced forces. However, if you push the car with a greater force than the force of friction holding it back, the car will accelerate and start moving. This is an example of unbalanced forces.