Because both of these equal forces do not act solely on one of us, they cannot cancel. Therefore, I can move my brother, because his response force does not cancel the force of my tackle. I only have to overcome the other forces on him, such as friction, which are not related at all to my tackle. Because these are not related, they do not have to be equal and opposite, and therefore I can easily overcome them. You might even notice my brother’s feet losing traction, indicating that the forces keeping him in place, such as friction, are no match for the superior strength of my tackle. And so, by law, Reeves is hopeless in this situation and sacked for a loss!
Newton's 3rd
Law
The above demonstration of subpar athleticism illustrates the concept of newton’s third law. This law states that for every action force (Object A exerts a force on Object B) there is an equal and opposite reaction force (Object B exerts a force on Object A). This means that in the tackling of my misfortunate brother, Reeves, we both exert a force on each other that is equal in magnitude. You might ask- How then does Reeves move? Wouldn’t the forces simply cancel? Here is why they don’t. Consider the second element of that reaction force: opposite. The forces exerted act on opposite objects, in this case, one on me and one on my brother.