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A rocket of mass 5700 kg ejects mass a...

A rocket of mass 5700 kg ejects mass at a constant rate of 15 kg/s withe constant speed of 12 km/s. The acceleration of the rocket 1 minute after the blast is `(g=10m//s^(2))`

A

`34.9 m//s^(2)`

B

`27.5 m//s^(2)`

C

`3.50 m//s^(2)`

D

`13.5 m//s^(2)`

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