Newton's Third law of motion states that for every action there is an equal and opposite reaction. This means that whenever two objects interact, they exert forces on each other that are equal in magnitude but opposite in direction. These forces are called action-reaction pairs.

For example, when you push a wall, the wall exerts a force back on you that is equal in magnitude but opposite in direction. This force is what prevents you from moving through the wall.

Another example is when two cars collide head-on. The cars exert forces on each other that are equal in magnitude but opposite in direction. These forces cause both cars to decelerate.

The concept of action-reaction pairs is important because it helps us to understand how forces interact with objects. It is also important because it is the basis for many other laws of physics, such as the conservation of momentum.

Some other examples of forces due to interaction between objects include:

* The force of gravity between the Earth and the moon

* The force of friction between two surfaces in contact

* The force of air resistance acting on a moving object

* The force of a spring when it is stretched or compressed

* The force of a magnet acting on a piece of metal

These are just a few examples of the many different forces that can be observed in nature. All forces are due to interactions between objects, and they play an important role in our everyday lives.