On the ground, in a pocket, in a bucket, etc..
The muzzle is the opening at the end of the barrel where the bullet exits when fired.
When the gun is fired the shell casing is ejected by the blow-back gas and the next bullet is automatically loaded. All in one motion. The next bullet is now ready to fire.
The bullet fired from a gun has greater horizontal acceleration. For vertical acceleration, they are both the same.
Actually, the proper name is "cartridge." The term bullet is an extremly common but incorrect usage when referring to a cartridge. The term bullet only refers to the piece of lead that comes out of the barrel when the gun is fired. The bullet is one component of the cartridge.
Yes.
Projectile, bullet
I used gelatin or a large water tank.
When a bullet is fired from a rifled firearm, the rifling leaves marks on the bullet. Those marks are unique to that gun, and no other gun makes exactly the same marks. If a bullet (or fired cartridge casing) is recovered from a crime scene, and we suspect that YOUR gun was used to commit this crime, then a sample bullet is fired from your gun, and compared to the crime scene bullet. A comparison microscope is used to compare the bullets, or marks made on the fired cartridge case by the extractor and firing pin.
A bullet fired from a gun has more momentum than a train at rest because momentum is the product of an object's mass and velocity. The bullet, despite being smaller in mass compared to the train, can have a significantly higher velocity, resulting in a greater momentum.
The bullet fired horizontally will hit the ground first, given that it has an initial horizontal velocity that keeps it moving forward from the moment it leaves the gun. On the other hand, the bullet dropped from the end of the barrel only has the force of gravity acting on it, causing it to fall vertically, which is slower than the horizontal motion of the fired bullet.
The momentum of a bullet fired from a gun is the product of its mass and velocity. It is a vector quantity that represents the motion of the bullet in a specific direction and is conserved in the absence of external forces.
It's the recoil from the force of the bullet being fired. The gun powder pushes the bullet forward and also equally pushes the gun back into your hand.