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Answer the question the system is 1) 2) 100% 3) 4) A machine gun fires 420 bullets per minute. The velocity of each bullet is 300ms-1 and the mass of each bullet is lgm. The power of the machine gun is 1) 315W 3) 630W 2) 315000W 4) 3150W A 1 kg mass at rest is subjected to an

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