A 5000 kg rocket is set for vertical firing. The exhaust speed is 800ms^{-1} .to give an initial upward acceleration of 20 ms^{-2}, the amount of gas ejected per second to supply the needed thrust will be (g- 10 ms-2) -185.5kgs^{-1} -187.5kgs^-1 -127.5kgs^{-1} 137.5kgs^{-1

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Q. A 5000 kg rocket is set for vertical firing. The exhaust speed is

800

^{- 1}

. To give an upward acceleration of

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, the amount of gas ejected per second to supply the needed thrust is

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