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28 A rocket has a mass of 20000 kg of which 16000 kg is fuel...

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28 A rocket has a mass of 20000 kg of which 16000 kg is fuel The rocket engine can exhaust fuel at the rate of 200 kg s with an exhaust velocity of 3000 m s relative to the rocket Find the net force acting o the rocket 10 second after blast off Take g 10 m s 1 4 2 10 N 2 6 10 N 3 1 8 10 N 4 zero

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