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A rocket of mass 6000 kg is set for vert...

A rocket of mass 6000 kg is set for vertical firing. If the exhaust speed is 1000m/sec. The rate of mass of gas ejected to supply a thrust needed to give the rocket an initial upward acceleration of `20.2 m//s^(2)` is

A

150 kg/sec

B

160 kg/sec

C

28 kg/sec

D

180 kg/sec

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The correct Answer is:
D
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