重拳奥秘之走进科学

唯楚有才

  A forceful punch gives you several advantages. Your strong jab allows you to keep your opponent at distance so you can either make an attack or defend one. In your attack you can make rock solid combinations to display your dominance or stop the fight with a KO or TKO.重拳给了你很多优势，你强有力的刺拳给了对手巨大的压力，这样你就有更多的优势去占据主动或者去KO，TKO对手，走进重拳，需要走进科学。
What do the numbers say?（数据在说明什么？）

We can measure punching force (the action of one body on another) in the lab. The score we use is called a Newton (after Sir Isaac Newton). The higher the Newton (N) the greater the force or the harder the punch.Punching forces in amateur boxing are around 2500 N. If you weigh 70kgs (11 stone or 154 lbs), you’ll exert about 700 N of force just stood still. That makes punching force about 3.5 times body mass.And to make that even more impressive your punch takes around six hundredths of a second (>60 ms) to throw.
我们可以在实验室测出冲压力，即一个物体对另一个物体的作用，数据的单位用牛顿表示，数值越高，表示力越大。取业余拳击的冲压力大概在2500牛顿左右，我们假设体重为70千克，那么你的体重为700N，也就是说冲压力大概为体重的3.5倍。

The Science（科学）
Studies suggest that punching force is dependent on the Impulse-Momentum relationship. This is the change in momentum experienced by a body under the action of a force is equal to the impulse of the resultant force. To put it straightforwardly, it’s how quick you punch and the snap as it reacts off an opponent’s body part.
Lets break the punch down…
Impulse = Momentum
This means…
Producing force quickly = moving mass quickly.
We can improve impulse by skill, hand speed, strength and acceleration. We can improve momentum by increasing body weight or ‘effective mass’.
研究表明，冲击力取决于脉冲（冲量）——动量的关系（在力的作用下，有效体重的动量变化等于合力的脉冲）
通俗点说，就是力在时间累积效应的量度=质量与速度的乘积，Ft=Mv
所以说，我们可以通过提高技巧，手速，力量，加速度来提高冲量。 我们也可以提高体重或者说有效体重来提高动量。
What we know
The numbers suggest that a punch in boxing requires a lot of to be force produced in a short space of time. In the boxing world we will call this ‘hand speed’, the scientific definition we’ll use is ‘rate of force development’.If something has a lot of momentum it is usually large, like an elephant or a tank. Or it is small but has a lot speed – like a rocket. You can make a punch harder by generating more momentum – being an elephant or a rocket.Since momentum is the mass of an object multiplied by its velocity, we can improve momentum by increasing mass.But being a boxer usually means you have to compete at a particular weight. That means unless you’re a heavyweight it’s difficult to improve.However, you can certainly improve hand speed, force production and the snap of the punch.And since hand speed is an important component in how hard you punch we’re on to a winner.

也就是说，在拳击世界中打出重拳意味着你需要在短时间内产生很多力量，我们称为拳速。假设重拳核心数据“动量”一定的情况下，通常来说，质量大的物体动量容易很大，比如坦克，大象，哪怕它们在低速的情况下，动量也很大。而质量小的物体，也可以通过提高速度来提高动量，比如火箭。在拳击世界里，你的质量由于先天原因一般来说并不会提高太多，你不会变成大象，但是你可以通过提高速度来提高动量，你可以成为火箭，像曼尼帕奎奥一样，只要你的拳速足够快，你也将成为赢家。
天下武功唯快不破，泰森的速度俨然就是他在重量级拳坛的最大杀器，80年代，泰森的体重并不太吃亏，而中量级的速度让他的“动量”如鱼得水，但我们需要更多的科学依据去解释乔治福尔曼的惊人重拳，其中的奥秘在哪里？

唯楚有才

附图

波士

at^2/2=s
t^2∝1/a

Ek=mv^2/2∝m(at)^2∝ma

Ek∝F
经过计算，质量和速度都不重要，重拳的破坏力完全跟调动的力量成正比
体重大重拳重主要由于提升体重时力量也往往会增加

黄拳全黄

先顶完了再学习

舍末逐本

幼稚园级别的理论分析

唯楚有才

波士 发表于 2019-2-8 19:32
at^2/2=s
t^2∝1/a

是喽，对于重拳的解释反正五花八门，用能量解释的话，速度的重要性要比质量高的多，用动量解释的话，好像不太对劲

唯楚有才

舍末逐本 发表于 2019-2-8 21:19
幼稚园级别的理论分析

波士

唯楚有才 发表于 2019-2-8 22:00
是喽，对于重拳的解释反正五花八门，用能量解释的话，速度的重要性要比质量高的多，用动量解释的话 ...

这个应该用能量解释的，因为物体的形变是跟能量有关，车祸的碰撞效果也是用能量计算的