If action and reaction forces were not equal in magnitude, momentum would not be conserved, leading to a breakdown of fundamental physics principles. Newton's third law states that two objects in contact exert equal and opposite forces, which is essential for maintaining contact. However, this law also applies to remote objects through gravitational or electrostatic forces, regardless of contact. The discussion raises questions about scenarios where forces differ in magnitude during actions like running or jumping, suggesting a deeper inquiry into the nature of forces. Ultimately, Newton's laws describe observed phenomena but do not explain the underlying reasons for their existence.
