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Q.

A rocket of initial mass 6000kg ejects mass at  constant rate of 200 kg/sec. with constant relative speed of 800 m/sec. The acceleration of the rocket after 5 sec is (neglect gravity)

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a

50 m/s2

b

16 m/s2

c

60 m/s2

d

32 m/s2

answer is D.

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