Discalimer: I am half asleep so I apologize for any mistakes
https://answers.yahoo.com/question/index...904AAeTwIu
Again, because i'm lazy I'm going to pull equations from http://www.physicsclassroom.com/class/1D...-Equations :
![[Image: U1L6a1.gif]](http://www.physicsclassroom.com/Class/1DKin/U1L6a1.gif)
vf^2=vi^2+2ad
(400m/s)^2=0^2+2a(1)
160000m^2/s^2=a*(1m)
80000m/s^2=a
16g=16/1000 kg = 0.016kg (Newton = kg*m/s^2)
The force exerted onto the bullet from the rifle is
F=ma=0.016*80000=1280N
That means that there is 1280N acting on your body (since you started with ΣF=ma=0)
http://wiki.answers.com/Q/What_does_a_10..._feel_like
Feels like you got 22 pounds thrown at you 10 times, or so I can tell.
But wait. We're talking SMGs and this is a SMG: http://en.wikipedia.org/wiki/Heckler_%26_Koch_MP5. Let's look at some data (http://www.notoo7.com/smg1.html):
Same velocity, let's say shorter distance? (Sorry I have no gun knowledge. I am neither an expert at guns or a hobbyist of any sort). At least 400 is what we chose last time:
vf^2=vi^2+2ad
(400m/s)^2=0^2+2a(0.22)
160000m^2/s^2=a*(0.22m)
727273m/s^2=a
Since loaded with 30 rounds = 2.710, and empty = 2.540
We can assume that each round weighs (2.710-2.540)/30=0.00566666666kg
F=ma=0.00566666666*727273=4121.21366182 N
... so hurts more than a pistol. But WAIT. that's per bullet. This thing can take 30 rounds and shoot 700 rpm. Damn.
So... let's say you decide to empty the clip into that CLA mofo that just rolled around the corner.
30 rounds * 1/(700 rounds/min)=0.04285714285minutes, or 2.57143 seconds.
In those 2.5 seconds... I'm pretty sure you just got thrown back.
(20 Jun 14, 02:05PM)killerjoe Wrote: yeah but you dont need recoil on an smg. its irritating in real life you wouldnt be doing thatΣF=ma=0
https://answers.yahoo.com/question/index...904AAeTwIu
Quote:400-475 m/s, with a bullet weight of ~16-22 grams.Because I'm lazy, let's assume that the bullet achieves 400m/s after 1 m (.
Again, because i'm lazy I'm going to pull equations from http://www.physicsclassroom.com/class/1D...-Equations :
vf^2=vi^2+2ad
(400m/s)^2=0^2+2a(1)
160000m^2/s^2=a*(1m)
80000m/s^2=a
16g=16/1000 kg = 0.016kg (Newton = kg*m/s^2)
The force exerted onto the bullet from the rifle is
F=ma=0.016*80000=1280N
That means that there is 1280N acting on your body (since you started with ΣF=ma=0)
http://wiki.answers.com/Q/What_does_a_10..._feel_like
Feels like you got 22 pounds thrown at you 10 times, or so I can tell.
But wait. We're talking SMGs and this is a SMG: http://en.wikipedia.org/wiki/Heckler_%26_Koch_MP5. Let's look at some data (http://www.notoo7.com/smg1.html):
Quote:
Heckler&Koch MP5 (Germany)
Data, MP5.
Caliber: 9x 19mm
Action: Retarded blowback
Overall length: 49/68cm (collapsed/extended)
Barrel length: 22cm
Weight: 2.540kg empty, 2.710kg loaded/30rds.
Muzzle velocity: 400m/s (1312fps).
Muzzle energy: 637 J (470 ft/lb)
Cyclic rate of fire: select-fire, 700 rpm
Same velocity, let's say shorter distance? (Sorry I have no gun knowledge. I am neither an expert at guns or a hobbyist of any sort). At least 400 is what we chose last time:
vf^2=vi^2+2ad
(400m/s)^2=0^2+2a(0.22)
160000m^2/s^2=a*(0.22m)
727273m/s^2=a
Since loaded with 30 rounds = 2.710, and empty = 2.540
We can assume that each round weighs (2.710-2.540)/30=0.00566666666kg
F=ma=0.00566666666*727273=4121.21366182 N
... so hurts more than a pistol. But WAIT. that's per bullet. This thing can take 30 rounds and shoot 700 rpm. Damn.
So... let's say you decide to empty the clip into that CLA mofo that just rolled around the corner.
30 rounds * 1/(700 rounds/min)=0.04285714285minutes, or 2.57143 seconds.
In those 2.5 seconds... I'm pretty sure you just got thrown back.