FightingArts Estore
Pressure Points
From a medical professional, straight facts on where and how to hit that can save your life.
Stretching
Limber or not, anyone can add height and speed to their kicks with this method.
Calligraphy
For yourself or as a gift, calligraphy is special, unique and lasting.
Karate Uniforms
Look your best. Max snap. low cost & superior crafted: “Peak Performance Gold” 16 oz uniforms.

MOTOBU
Classic book translation. Hard to find. Not in stores.
Who's Online
0 registered (), 30 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
mohdnabeel, sunny, swordy, jerrybarry24, SenseiGregT
22915 Registered Users
Top Posters (30 Days)
Ed_Morris 4
Matakiant 3
AndyLA 3
futsaowingchun 2
Zombie Zero 2
September
Su M Tu W Th F Sa
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30
New Topics
Martial News
by Matakiant
Today at 06:42 AM
STX Kickboxing Seminar
by Marcus Charles
09/09/14 06:57 PM
Biu Tzu- 1st section applications
by futsaowingchun
09/05/14 10:56 PM
2014 World Championships Chelyabinsk: The Gallery
by ergees
09/01/14 03:51 AM
Biu Tzu- Snake hand strike
by futsaowingchun
08/27/14 09:02 PM
An open letter to bunkai researchers...
by Bartfast
08/05/14 04:18 PM
The Karate punch
by Matakiant
10/30/13 07:41 AM
Where Are They Now?
by Dobbersky
05/30/13 08:08 AM
mindfullness meditation
by
01/06/09 11:27 AM
** Introduce Yourself! **
by
05/13/07 08:02 AM
Recent Posts
Martial News
by Matakiant
Today at 06:42 AM
attacked from behind
by AndyLA
09/19/14 09:05 AM
An open letter to bunkai researchers...
by Matakiant
09/18/14 07:11 AM
The Karate punch
by Matakiant
09/18/14 06:07 AM
** Introduce Yourself! **
by Zombie Zero
09/16/14 04:43 PM
Eugue Ryu
by kolslaw
09/12/14 03:35 PM
Biu Tzu- 1st section applications
by futsaowingchun
09/05/14 10:56 PM
2014 World Championships Chelyabinsk: The Gallery
by ergees
09/01/14 03:51 AM
mindfullness meditation
by log1call
08/31/14 09:43 PM
Biu Tzu- Snake hand strike
by futsaowingchun
08/27/14 09:02 PM
Forum Stats
22915 Members
36 Forums
35576 Topics
432496 Posts

Max Online: 424 @ 09/24/13 10:38 PM
Page 2 of 2 < 1 2
Topic Options
#83683 - 04/22/05 04:39 PM Re: Impact force of a punch
Anonymous
Unregistered


Sorry, deceleration is really just a negative acceleration, my maths conditioned me out of referring to deceleration or centrifugal force etc! But i realised most people separate the two in their mind.

I didn't mean any offense in that last comment either, I was just being cheeky!

Top
#83684 - 04/23/05 12:29 AM Re: Impact force of a punch
Anonymous
Unregistered


The way I see it, the train example doesn't apply because a train w/ no acceleration is sitting still. It had to accelerate from 0 to "X" mph. The fact it reached "X" mph & remained constant doesn't disqualify the formula. The impact on your body would be the same @ the instant the train hit "X" mph or an hour after it hit "X" mph (remaining constant).

Isn't this correct?

Top
#83685 - 04/23/05 04:45 AM Re: Impact force of a punch
Anonymous
Unregistered


[QUOTE]Originally posted by hedkikr:
The way I see it, the train example doesn't apply because a train w/ no acceleration is sitting still. It had to accelerate from 0 to "X" mph. The fact it reached "X" mph & remained constant doesn't disqualify the formula. The impact on your body would be the same @ the instant the train hit "X" mph or an hour after it hit "X" mph (remaining constant).[/QUOTE]

A train at any constant speed, be it 0mph or 100mph, will not be accelerating (even though it needs a force to equally counter various friction forces).

You are right about the impact being the same if you're hit while it is at constant velocity, or if it reaches X velocity during a period of acceleration. At the moment of impact it's kinetic energy would be the same, or it's momentum would be the same. If the impact conditions were the same in both examples, then the acceleration you experience would be the same too.

Top
Page 2 of 2 < 1 2


Moderator:  Cord, MattJ, Reiki, WhiteDragon11 




Action Ads
1.5 Million Plus Page Views
Monthly
Only $89
Details

Stun Guns
Variety of stun gun devices for your protection

Buy Pepper Spray
Worry about your family when you’re not around? Visit us today to protect everything you value.

Koryu.com
Accurate information on the ancient martial traditions of the Japanese samurai

C2 Taser
Protect yourself and loved ones from CRIME with the latest C2 Taser citizen model. Very effective.

 

 



Unbreakable Unbrella

krav maga