This choice is made by the manufacturer, it is not invariant. Even in the 1930s; and no doubt before; cap guns used to have a roll of percussion caps to allow repeated firing.
No.
For every action there is an equal and opposite reaction
All firearms need: A projectile such as a bullet, gun powder to propel the bullet out of the barrel of the gun, and a cartridge to hold them together. Gun powder only explodes and the force from the explosion propels the bullet out of the barrel, basically. The cartridge is disposed of thereafter. A bullet will not move unless the gunpowder behind it explodes. This is the basic operation of a firearm/rifle.
Yes, a bullet can be shot with no gun. A bullet does not need a lot of speed to kill someone. Say someone threw a bullet to the ground, it might bounce back up and hit you, thus causing you to die or be injured
Newton's Law- for every action, there is an equal and opposite reaction. When the bullet is pushed forward out of the barrel, then the gun is pushed back by an equal amount. That is recoil, or "kick". The amount is based on the weight and speed of the bullet, and the weight of the gun. All things being equal, a light bullet kicks less than a heavy bullet, and a heavy gun kicks less than a lighweight gun.
When a bullet is fired from a gun, it creates a sudden release of gases that exert a force on the gun's barrel and action system. This force, known as recoil, causes the gun to jerk backward in the opposite direction of the bullet's motion. The jerk is a result of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.
Newton said "For every action, there is an equal and opposite reaction." The action is pushing the bullet in one direction. Reaction is the gun being pushed in the other. The energy is speed times mass. The gun masses much more than the bullet, and so will move proportionately slower than the bullet. Which is a very good thing- or the recoil of the gun would kill the shooter.
=it is newtons third law of motion which states=="for every action there is an equal and opposite reaction"==when a gun is fired the bullet moves in the forward direction which is action whereas the gun recoils in the backward direction which is the reaction......................=
The law that says every action has an equal and oppsite reaction: the momentum of the bullet is balanced by the equal momentum of the gun (and shooter) in the opposite direction - the recoil.
Because that was the way it was loaded into the gun, shot charge, bullet charge, shot charge, bullet charge. If you load it that way, it will shoot that way.
The gun weighs MUCH more than the bullet.
A bullet fired from a gun