The rocket of mass 1000kg ejects burned gases with a speed of 1500m/s relative to the rocket. The velocity of the rocket after ejecting 6000kg burned gases is ______ m/s. The initial velocity of the rocket is 0.
(a) 13374.44
(b )1354.35
(c) 1339.23
(d) None
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Answer:
it's none .
the correct answer is 6500m/s.
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