m at XI 500 A rocket has a mass of 100 kg 90 of this is fuel It ejects fuel vapours at the rate of 1 kg sec with a velocity of

Question

m at XI 500 A rocket has a mass of 100 kg 90 of this is fuel It ejects fuel vapours at the rate of 1 kg sec with a velocity of 500 m sec relative to the rocket It is supposed that the rocket is outside the gravitational field The initial upthrust on the rocket when it just starts moving upwards is NCERT 1978 a Zero b 500 N c 1000 N d 2000 N

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