How to not lose Nunchaku energy through the cord or chain.

I share my insights for a concern common to nunchaku beginners. With so many variables at play, there are bound to be multiple solutions for each problem. Let's all beat random stuff up and share what we learn. The greater the variety of targets and techniques, the better!

[vanivanov]

....OK, I don't want to mock the question at 0:50, as it's the fault of Shady taking advantage of people without any education in physics, and since I have even known a "MATH MAJOR" to make this kind of blunder.

So the question is, *"Do Nunchaku strikes lose energy, due to the bar bouncing off the target?"*

Simple answer: No. No energy is lost at all. The amount it bounces off makes no difference to the strike.

An example of this, get a super ball. Most are about 90% efficient, so if you throw it against a wall with 1kg of force, it'll bounce back with 0.9kgs of force. However, if someone hits you in the face with that super ball... it isn't going to feel like 0.1kg of force, it'll feel like 1 kg of force. Basically, it's like a spring, where the ball compresses when it hits into you, and then it jumps off your face as it decompresses.


An even more obvious point is that momentum is velocity x mass, and an objects momentum CANNOT be changed unless acted upon by another object. So, right before the super ball starts bouncing off your face... what's its velocity? ZERO. It has stopped moving towards you the target, and it is not yet bouncing, moving away from you.

So, what is mass x velocity when velocity is zero? ZERO, that's right. So the super ball used up all of its energy during the impact, BEFORE it began to bounce.



Hope this clears it up, because this is a really sad meme that's been going around. Seriously, I had to explain this to a bleeding MATH MAJOR (Parker something), who told me all kinds of alt-science ideas.