The velocity, weight and shape of the bullet, and the density of air through which the bullet moves changes a firearm's range.
If the bullet were shot perfectly vertically in a vacuum, it would reach its maximum altitude, then fall at a velocity of 32 ft/sec/sec. The terminal velocity would depend upon the altitude reached by the bullet, which in turn depends upon the caliber and load of bullet shot.
The only time that a car will stop a bullet is if you are in Hollywood, or have an armour-plated vehicle. A cow interposing itself between the bullet and yourself would reduce it velocity significantly more.
Reduce the thrust, air resistance will reduce the velocity, lift will diminish, gravity will reduce the height.
The following theoretical explanation ignores the impact of air resistance and other dissipative forces: The bullet will leave the barrel with a certain amount of kinetic energy (Ek=1/2mv2). As the bullet rises, it will lose velocity and consequently kinetic energy. At the peak of its trajectory, the bullet will momentarily reach zero velocity as it changes directions and begins to fall. At this instant, the bullet will have zero kinetic energy and maximum potential energy (U=mgh). As the bullet falls, it will convert potential energy back to kinetic energy as it gains velocity. In theory, the bullet will be traveling at its original muzzle speed when it hits you. In reality, air resistance and wind, etc will impact the bullets flight and reduce the speed upon its return to earth.
muzzle velocity is the velocity of bullet and recoil velocity is the velocity of gun.
Velocity is an intensive property.
Assuming the bullet is fired from a gun, the bullet will move out of the bore with a high velocity and will immediately begin falling and decelerating. If the bore is rifled, the bullet will also rotate on its long axis (providing stability in flight).
Bullet trajectory is the path the bullet travels once it leaves the barrel. Bullets travel on a long arch and cross the line of sight twice. Once shortly after leaving the barrel and once again on target assuming the sights are properly zeroed. This is the trajectory of the bullet. Bullet velocity is the speed at which the bullet is traveling along it's trajectory.
Gravity and air resistance will both play a part. Air resistance is likely to reduce speed and gravity will cause the bullet to be pulled towards the ground.
When a bullet is fired on Earth, the atmosphere will provide some air resistance & friction to the bullet, gradually slowing it down. In space (no atmosphere, no air) one would expect the bullet to continue to travel indefinitely at the muzzle velocity (until acted upon by another force). <<>> A bullet leaves the gun at about 800 metres per second.
Example: bullet fired from gun. If you aim horizontally to the ground, gravity will cause the bullet to fall. Once the bullet is shot from a gun, its motion can be described using vector components. All this means is that the speed of the bullet will have a vertical and horizontal part to it. A bullet in the air has no forces acting on it horizontally (neglecting air resistance). Vertically, gravity acts on the bullet and pulls the bullet down. Since there is nothing pushing up on the bullet, the bullet will begin to fall due to gravity. If you fire a bullet upwards at an angle, it is basically the same idea. The bullet is fired at an angle with an initial velocity. Break this velocity into horizontal and vertical parts using a triangle formed with the angle with which is was fired. The horizontal velocity of the bullet will not change. The vertical velocity of the bullet will change- gravity is decreasing it. The bullet will move up, then move up more slowly, then stop moving up, then fall down slowly, fall down quickly, etc. While it is doing this, it will keep moving horizontally at the same speed, which gives you a curved shape. They have horizontal velocity and vertical acceleration