Question

A 600 kg rocket is set for a vertical firing. If the
exhaust speed is 1000 ms⁻¹ , the mass of the gas
ejected per second to supply the thrust needed
to overcome the weight of rocket is
(a) 117.6 kg s⁻¹ (b) 58.6 kg s⁻¹
(c) 6 kg s⁻¹ (d) 76.4 kg s⁻¹

Answer 1

Answer:

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