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 (), 46 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
SenseiGregT, sagat, JFawkes, pluckysaga39, sgtdemeo
22911 Registered Users
Top Posters (30 Days)
Dobbersky 6
AndyLA 5
Ed_Morris 4
futsaowingchun 3
VDJ 2
August
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
31
New Topics
Biu Tzu- Snake hand strike
by futsaowingchun
08/27/14 09:02 PM
Chum Kiu 2nd section applications
by futsaowingchun
08/20/14 09:54 PM
2013 World Championship Rio: The Gallery (HD)
by ergees
08/19/14 05:22 AM
Chi Sao demonstration
by futsaowingchun
08/14/14 10:57 PM
Decent Fight channel
by FrankyFruits
08/07/14 09:19 PM
2014 European Championships Cadets Athens: Videos
by ergees
08/07/14 10:00 AM
Life goes on....
by Dobbersky
08/07/14 05:59 AM
An open letter to bunkai researchers...
by Bartfast
08/05/14 04:18 PM
ITF TaeKwonDo or Shotokan Karate????
by Dobbersky
07/10/14 07:14 AM
The Karate punch
by Matakiant
10/30/13 07:41 AM
Recent Posts
** Introduce Yourself! **
by Zombie Zero
Yesterday at 10:50 PM
mindfullness meditation
by log1call
08/28/14 02:39 AM
Biu Tzu- Snake hand strike
by futsaowingchun
08/27/14 09:02 PM
An open letter to bunkai researchers...
by Ed_Morris
08/26/14 09:58 PM
The Karate punch
by Ed_Morris
08/26/14 09:27 PM
Chum Kiu 2nd section applications
by futsaowingchun
08/20/14 09:54 PM
2013 World Championship Rio: The Gallery (HD)
by ergees
08/19/14 05:22 AM
attacked from behind
by AndyLA
08/16/14 04:59 PM
ITF TaeKwonDo or Shotokan Karate????
by VDJ
08/15/14 05:46 PM
Chi Sao demonstration
by futsaowingchun
08/14/14 10:57 PM
Forum Stats
22911 Members
36 Forums
35572 Topics
432483 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