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The mass of a rocket is 500 kg and the r...

The mass of a rocket is 500 kg and the relative velocity of the gases ejecting from it is 250 m/s with respect to the rocket. The rate of burning of the fuel in order to give the rocket an initial acceleration `20 m//s^(2)` in the vertically upward direction `g = 10 m/s^(2)`, will be -

A

30kg/s

B

60kg/s

C

45kg/s

D

10kg/s

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