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If the force on a rocket, that releases the exhaust gases with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is

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If the force on a rocket, that releases the exhaust gases with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is

1) 0.07 kg/s
2) 1.4 kg/s
3) 0.7 kg/s
4) 10.7 kg/s

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