Physics of Karate Essay - 1080 Words

The basic ideas behind any style of karate can in general be reduced to the goal of achieving the most effective movements with the least effort. Specifically, with a strike such as a punch, kick, knife-hand or similar, the karateka attempts to move smoothly through the strikes, conserving energy towards the impact point. When thought about in terms of energy, the most common equation is that of rotational kinetic energy, or KE=(1/2)mv^2 + (1/2)Iω^2. Another way to think about a strike is to attempt to focus as much force as possible at the point of impact. In many strikes, this is facilitated by drawing an almost straight line with the striking tool from the original point of rest to the point of impact. This is based on the†¦show more content†¦The feet are placed about shoulder-width apart, the front leg is bent so that the toes cannot be seen, the back leg is straight, and there is constant pressure down through the heel of the back leg. The upper body should be leaned very slightly forward in preperation of movement, and the torso and hips dropped downwards to ground the stance. Because this is a stable stance, the various forces acting on the body must be equalized somehow. The main force is the one caused by extension of the back leg into the ground (a). This is held in check by dropping the torso into the stance and allowing the friction on the front foot from the ground, ÃŽ ¼b + ~(1/3)ÃŽ ¼mg where ÃŽ ¼ is the coefficient of static friction, and b is the force of the body attempting to move forward due to a, and the tensing of the front leg quads to keep the stance in place. If the stance is correct, this force is easily released to throw into techniques, either by using it as a spring to pull the reverse leg forward for a kick, or by rotating the body or otherwise neutralizing the check imposed by the front leg to throw some other technique, such as a punch. Reverse Punch Equations: F=ma ÃŽ ¤=IÃŽ ± ÃŽ ±=a/r v=ωr centripetal acc: a=(v^2)/r=ω^2r A reverse punch is a punch thrown over the back leg. For example, from a front stance with the right leg back, a reverse punch would be executed with the right arm. Punches, as with manyShow MoreRelatedLets Love Sport876 Words   |  4 Pagesvarious kind of microbes. According to scientists’ researches, during playing sport body produces Endorphin which actually it pushes out the toxic materials and keeps the heat of the body in balance. The other advantage of playing sport on individual physics is having better body shape. Throughout history, people can’t give-up their interest in their body and also now many people love to have an attractive body shape and they do sport to be more fit. Naturally, by doing sport body automatically decreaseRead MoreThe Haunting Of Hill House1249 Words   |  5 PagesPrecession of Simulacra†. 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But an extra teacher! Get out of here. I had good grades in subjects like English, chemistry, and physics. I wasn’t a junkie kid. I hadn’t even smoked a cigarette. I just did some stupid stuff. But there was talk about putting me in a special School. They wanted to brand me, and I felt like a UFO. It started ticking like a bomb in my body. Do I need