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1.A person holding a rifle (mass of person and rifle together is 100 kg ) stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 m/s. The final velocity acquired by the person and the average force exerted on the person are
 stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 m/s. The final velocity acquired by the person and the average force exerted on the person are){kind=link}