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Certain factors about the paintball gun can affect the velocity the paintball will be shot at. We used a ported barrel on our gun, which means it has holes in it. Ported barrels are designed to help shoot the ball faster, and it ends up being quieter but that’s not the point. When the ball is being pushed out of the barrel it creates a bit of pressure on the air that it pushes out, compressing it, therefore making it harder to move through. This pressure creates some
pressure and slows down the ball. The holes in the ported barrel help the air escape so that the pressure doesn’t build. It also, on the other hand, allows the propellant to escape which lessens the force that pushes the paintball, this decrease in minimal. (Ed) The amount of pressure in the gas tank also affects the velocity. In the paintball world the velocity is defined in feet per second (f/s).
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If you increase your f/s the ball should go faster. The ball will also slow faster because at higher velocities more air friction is applied. If you lower your f/s the ball will not go as fast but it will also retain its speed longer. (Ed)HyperPhysics defines air resistance, or what they call air drag, as at a 90 degree angle. Where C is a shape dependant drag coefficient, this is usually .5 for a sphere. P is the density of air, which tends to be 1.29 kg/m^3. A is the cross-sectional area and v is the velocity. With respect to the angle we could theoretically calculate the air resistance the paintball will encounter, however this is not so easily don’t seeing as the forces of gravity and air resistance do not apply on the same axis. That is why HyperPhysics derived their formula at a 90 degree angle so that the air resistance and gravity apply on the same axis. (Nave)
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