A Theoretical Punch ?

Question

I don't really want to experiment, but I have heard two theories.

1) If you punch something, it is more powerful if you follow through

2) If you punch something, withdraw your hand quickly to reduce contact time and increase power (F=ma,p=mv)

Which is true? They can't both be?

I am NOT going to use this, so don't get all preachy.

Answer 1

If you punch me prepare to experience a world of pain.

Answer 2

1 is true in physics. The reason you do #2 is because you want to get your hand back as fast as you can so that you can use it to defend against the other guys punches, etc.. Leaving a hand out leaves you vulnerable. That is the logic behind fast forward, fast back. On a punching bag you can generate more force by leaning into the punch, "punch through the target", twisting your body, basically getting a snap in your arm at the end of the punch, aligning the back of your hand with the back of your wrist (bone on bone contact so more impulse goes to your target, also saves you from bending and injuring your wrist), you can also give push with your striking arm foot for a little bit more force (acceleration).

Answer 3

More power will come from follow through as your solder will help the power and also twist the leg on the same side to get more power.