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A rocket of mass 5000 kg is to be projec...

A rocket of mass 5000 kg is to be projected vertically.The gases are exhausted with a velocity 1000 ms-w.rt. to the rocket vertically downwards what will be the minimum rate of burning the fuel against gravity ?

A

`49 kg s^(-1)`

B

`147 kg s^(-1)`

C

`98 kg s^(-1)`

D

`196 kg s^(-1)`

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The correct Answer is:
A
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