Boxing is a combative sport, which means that there are two opponents who confront each other in combat. Unlike other combat sports such as Wrestling, Judo, Kung Fu, and many others, boxing requires their athletes to fight solely by using their fists. Other rules of this sport include "clean" strikes which means no attacking sensitive areas (below belt, back, or back of the head, neck, kidney, and/or groin) or attacking with restricted parts of the body (head, shoulder, forearm, and/or elbow). Like many other sports/practices, boxing displays Sir Isaac Newton's Three Laws of Motion.
"every object persists in its state of rest or uniform motion in a straight line unless it is compelled to changed that state by forces impressed on it."
Basically, the following law states that the behavior of all objects remain constant (same) unless it is acted upon by an unbalanced force. As explained in the diagram above, if an object is at rest, it will remain in rest. Vice versa, if the object is in motion, it will remain so. In order for this law to stay relevant there is a condition that must met, this condition is stated within the law: "...unless acted upon by an unbalanced force." As long as the forces remain balanced, the laws applies. If this unbalanced force where to inserted, the object would either be put to rest or would be given the energy required to accelerate.
An example which shows how boxing relates to the Law of Inertia would be before the exchange of punches between the two opponents. Depending on the skill of the boxer, if they were to be beginners, they would use the basic stance. In the stance, they would have their feet separated by shoulder width with their back foot slightly raised for mobility [defense]. In a match, the stance will keep the fighter balanced until the punch is delivered and the force knocks the opponent off balance. During this scenario, the fighter remained constant until it was delivered the first blow, or in other words, the unbalanced force.
"Force is equal to the change in momentum [p] (mass * Velocity) per change in time. for a constant mass, force equals mass times acceleration."
As already stated in Newton's first Law of Motion, an object at will not remain constant unless acted upon by an unbalance force. The following law states the relation between force and momentum which is: Force = Mass x Acceleration (Of Object). The acceleration can be changed by a change either in speed, direction, or both speed and direction. This would cause the acceleration to have either a positive or negative change. As already stated before, the acceleration can be changed by two factors, mass and acceleration (net force).
If the object's mass (in kilograms) were to be increased, it would take more force to cause the object to accelerate. As a result, the object would have a slower acceleration then it had before. Vice versa, if the force were to be increased without any other changes, the acceleration would also increase. This all shows that there is a directly proportional relationship. Due to this fact, we can rearrange the following equation to find either find the mass [mass = force/acceleration] or the acceleration [acceleration = force/mass] if anyone of the following components are present.
An example which shows how boxing relates to the Law of Force and Acceleration would be the amount of damage your punch could deliver. For a boxer, there are a few factors that must be taken into consideration when you want to determine how hard your blow will be. These factors include the mass of the boxer and the force used to deliver the punch. While the amount of time spent in training also matters, it does not have any correlation to Newton's Law. Mass is the main component in which many boxer's differ in. Usually, the larger the opponent (heavyweight boxers) would be able to apply more force into their punches. There is an exception for a few boxers who train under differentiating conditions than the usual regimen would recommend. Due to this, some skilled fighters are able to hit harder than you would expect them to. The harder the hit, the more force it will need.