A bullet fired from a gun
Momentum is the product of an object's mass and velocity. A high-speed bullet has more momentum than a slow moving train because the bullet has a smaller mass but much higher velocity. This means the bullet can have more impact and be harder to stop compared to the train, even though the train has more mass.
The momentum of an object is the product of its mass and velocity. In the case of a slow moving train and a high-speed bullet, the bullet would have a higher momentum due to its higher velocity even if its mass is smaller. This is because momentum is more affected by velocity than by mass.
A speeding bullet and a fast-moving train have a lot of force because of their momentum. Momentum is the product of mass and velocity, so the greater the speed and mass of an object, the more force it has. In the case of a bullet or a train, their high velocity and mass result in a significant amount of force when they collide with another object.
That would depend on what you consider "large".The size of an object's momentum = (its mass) x (its speed).So, more mass and more speed result in more momentum.
At the instant the gun fires, the bullet is at rest- speed zero. As the expanding gasses from the burning gunpowder reach the bullet, they begin pushing the bullet up the barrel. It's speed is increasing- and the longer the push, the higher the speed. There IS a point of diminishing returns- where a barrel LONGER than the perfect length begins to slow the bullet- you have used all the expanding gasses, and now friction is slowing the bullet. If you had a barrel 20 ft long, the bullet would not make it all the way up the barrel, it would stop.For barrels on any realistically-usable weapon, a longer barrel will provide more momentum to the bullet than a shorter one. In addition, longer rifled barrels will also impart more spin, which will increase accuracy.
Momentum is the product of an object's mass and velocity. A high-speed bullet has more momentum than a slow moving train because the bullet has a smaller mass but much higher velocity. This means the bullet can have more impact and be harder to stop compared to the train, even though the train has more mass.
The momentum of an object is the product of its mass and velocity. In the case of a slow moving train and a high-speed bullet, the bullet would have a higher momentum due to its higher velocity even if its mass is smaller. This is because momentum is more affected by velocity than by mass.
A speeding bullet and a fast-moving train have a lot of force because of their momentum. Momentum is the product of mass and velocity, so the greater the speed and mass of an object, the more force it has. In the case of a bullet or a train, their high velocity and mass result in a significant amount of force when they collide with another object.
If the gun is stationary before the shot, then the momentum of the gun and the momentum of the bullet are equal and opposite after the shot.
That would depend on what you consider "large".The size of an object's momentum = (its mass) x (its speed).So, more mass and more speed result in more momentum.
The elephant
At the instant the gun fires, the bullet is at rest- speed zero. As the expanding gasses from the burning gunpowder reach the bullet, they begin pushing the bullet up the barrel. It's speed is increasing- and the longer the push, the higher the speed. There IS a point of diminishing returns- where a barrel LONGER than the perfect length begins to slow the bullet- you have used all the expanding gasses, and now friction is slowing the bullet. If you had a barrel 20 ft long, the bullet would not make it all the way up the barrel, it would stop.For barrels on any realistically-usable weapon, a longer barrel will provide more momentum to the bullet than a shorter one. In addition, longer rifled barrels will also impart more spin, which will increase accuracy.
No. Assuming you have a gun that can fire in space, you would travel in the opposite direction, conserving momentum, but because you are more massive than the bullet, your speed in the opposite direction would be less. Momentum is mass*velocity, so your speed should be less than the bullet's by the same factor as the ratio of the bullet's mass to your own. You would also start rotating unless your shot was perfectly aligned with your center of mass.If that's not convincing, consider what happens if you shoot a bullet straight into the air. Does the earth move in the opposite direction at the same speed?
More or less whatever the manufacturer wants it to be. If you're asking about a particular bullet train, you'll have to be more specific.
No, momentum is determined by both mass and velocity. Even though a bullet can have a very high velocity, the mass of a huge truck is much greater, resulting in greater momentum.
It depends on how fast each is going and how much each weighs. Momentum is calculated by multiplying the mass of an object by its speed. A tiny bullet moving very fast can have more momentum than a huge truck if the truck is moving very slowly (or not at all). (bullet mass) X (bullet speed) > (truck mass) X (truck speed)
No, as it has less passenger seats