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  2. Muzzle velocity - Wikipedia

    en.wikipedia.org/wiki/Muzzle_velocity

    For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance.Projectiles traveling less than the speed of sound (about 340 m/s (1,100 ft/s) in dry air at sea level) are subsonic, while those traveling faster are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the ...

  3. Bullet - Wikipedia

    en.wikipedia.org/wiki/Bullet

    A bullet from a 9 mm Luger handgun, reaches speeds of only 2,200 kilometres per hour (1,370 mph). Similarly, an AK-47 , has a muzzle velocity of about 2,580 kilometres per hour (1,600 mph). [ 12 ]

  4. .220 Swift - Wikipedia

    en.wikipedia.org/wiki/.220_Swift

    The velocity of the cartridge ranges from 2,000 km/h (1,200 mph; 560 m/s; 1,800 ft/s) up to about 4,500 km/h (2,800 mph; 1,200 m/s; 4,100 ft/s). The Swift is a large-cased .224 caliber cartridge and bullet that was created for small game such as prairie dogs, groundhogs, marmots and other vermin (or "varmints" in the

  5. Subsonic ammunition - Wikipedia

    en.wikipedia.org/wiki/Subsonic_ammunition

    In this instance, heavier bullets are loaded in standard ammunition, which reduces muzzle velocity below the speed of sound. As an example, the very common 9×19mm Parabellum standard military round is a 7.5 g (116 gr) bullet at velocities typically around 360 m/s (1,200 ft/s).

  6. External ballistics - Wikipedia

    en.wikipedia.org/wiki/External_ballistics

    This schlieren image of a bullet travelling in free-flight demonstrates the air-pressure dynamics surrounding the bullet. External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin stabilized, flying ...

  7. Physics of firearms - Wikipedia

    en.wikipedia.org/wiki/Physics_of_firearms

    Let m b and v b stand for the mass and velocity of the bullet, the latter just before hitting the target, and let m t and v t stand for the mass and velocity of the target after being hit. Conservation of momentum requires m b v b = m t v t. Solving for the target's velocity gives v t = m b v b / m t = 0.016 kg × 360 m/s / 77 kg = 0.07 m/s = 0 ...

  8. Rules of the Road: 25 mph is too fast. Is there a lower ... - AOL

    www.aol.com/rules-road-25-mph-too-030000807.html

    The maximum speed for the Saturn V rocket was 25,000 mph. The maximum speed of a Bugatti Chiron (the fastest production road car) is 305 mph. The Mitubishi Mirage (the cheapest car available in ...

  9. Hypersonic weapon - Wikipedia

    en.wikipedia.org/wiki/Hypersonic_weapon

    Comparison of Ballistic Missile and Hypersonic Glide Vehicle (C-HGB) Flight Trajectories for the LRHW Program Scramjet-powered hypersonic cruise missile. A hypersonic weapon is a weapon capable of travelling at hypersonic speed, defined as above Mach 5, or above 5 times the speed of sound.