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In conventional guns, a bullet loses velocity from the moment the gunpowder ignites and sends it flying. The railgun projectile instead gains speed as it travels the length of a 32-foot barrel, exiting the muzzle at 4,500 miles an hour, or more than a mile a second.
In a "conventional" gun the bullet has a velocity of zero before ignition occurs. So at ignition that bullet starts losing velocity? From zero? Negative velocity? :?
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