It depends on how thick the Kevlar vest is.
the speed of a bullet fired by g3 is approximately 3500km/second according to my knowledge regards malikhammad38@yahoo.com
Can't answer without the distance to target.
If you have ordered questions into bullet points then each question (or bullet point) should end with a question mark.
what does a40 cal. bullet look like
It has a maximum operational speed of 200 mph. The current trains could go faster but there are problems with noise pollution and braking distances as well as excessive wear of the overhead power cables.
The maximum effective range of a .45 caliber bullet is approximately 120 meters.
It depends - logically - on the caliber of the bullet, and the thickness of the pine. A deer rifle bullet will penetrate a 2x4 with no difficulty, and may or may not penetrate a 4x4. A .22 will penetrate neither, a .50 machine gun bullet will penetrate an 8x8. Loosely speaking, I would not consider pine to be a bulletproof material.
yes it can
It is possible.
Yes
Yes. A bullet traveling with a sufficient speed would still penetrate something even if it is in space. Since air resistances does not play a role in space one might make the case that bullets are even more dangerous in space.
kinetic energy
It depends on several factors, not just the size. Velocity and muzzle energy are also factors.
Yes, it is possible for a bullet to fully penetrate one person and also strike another person.
The bullet itself is capable of traveling over 4 kilometres.
This depends on the particular caliber, weight, velocity, and construction of the bullet and the "Threat Level" of the body armor. No vest is bullet proof -- the preferred term is body armor.Generally speaking hollow points are much lesslikely to penetrate body armor which will stop non-hollowpoints bullets of the same caliber, weight, and velocity.
The bullet itself is capable of traveling over 4 kilometres.