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The g-force acting on an object in any weightless environment such as free-fall in a vacuum is 0 g. The g-force acting on an object under acceleration can be much greater than 1 g, for example, the dragster pictured at top right can exert a horizontal g-force of 5.3 when accelerating.
According to Newtonian mechanics, if the gun and shooter are at rest initially, the force on the bullet will be equal to that on the gun-shooter. This is due to Newton's third law of motion (For every action, there is an equal and opposite reaction). Consider a system where the gun and shooter have a combined mass m g and the bullet has a mass m b.
The request for proposals issued on 6 January 1972 called for a 20,000-pound (9,100 kg) class air-to-air day fighter with a good turn rate, acceleration, and range, and optimized for combat at speeds of Mach 0.6–1.6 and altitudes of 30,000–40,000 feet (9,100–12,000 m). This was the region where USAF studies predicted most future air ...
G-Force is a 2009 American spy adventure-comedy film produced by Walt Disney Pictures and Jerry Bruckheimer Films. Directed by Hoyt Yeatman in his directorial debut and written by Cormac and Marianne Wibberley with a story by Yeatman, who worked in the area of visual effects alongside co-founding Dream Quest Images .
For much of its life, four different models were proposed: a compact PDW (personal defense weapon) with a 241 mm (9.5 in) barrel, a carbine with a 317 mm (12.5 in) barrel, a sniper and automatic rifle variant, both with 508 mm (20 in) barrels. In addition a Light machine gun with a 100-round dual drum Beta C-Mag is proposed.
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The weapon is based on the Heckler & Koch G3 and HK91 design, which itself is a variant of the Spanish-made CETME rifle.The United States Federal Assault Weapons Ban enacted in 1994, by President Bill Clinton, prohibited certain cosmetic features of the HK91, which meant that the HK91 and its variants could no longer be manufactured and sold to the US civilian market in their original ...
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