A 5000 kg rocket is set for vertical firing. The exhaust speed is\[800m{{s}^{-1}}\]. To give an initial upward acceleration of\[20m{{s}^{-2}}\], the amount of gas ejected per second to supply the needed thrust will be \[\left( g=10m{{s}^{-2}} \right)\]

\[185.5\text{ }kg\text{ }{{s}^{-1}}\]

\[127.5\text{ }kg\text{ }{{s}^{-1}}\]

\[187.5\text{ }kg\text{ }{{s}^{-1}}\]

\[137.5\text{ }kg\text{ }{{s}^{-1}}\]

A 5000 kg rocket is set for vertical firing. The exhaust speed is\[800

1.	A 5000 kg rocket is set for vertical firing. The exhaust speed is\[800m{{s}^{-1}}\]. To give an initial upward acceleration of\[20m{{s}^{-2}}\], the amount of gas ejected per second to supply the needed thrust will be \[\left( g=10m{{s}^{-2}} \right)\]
A.	\[127.5\text{ }kg\text{ }{{s}^{-1}}\]
B.	\[187.5\text{ }kg\text{ }{{s}^{-1}}\]
C.	\[185.5\text{ }kg\text{ }{{s}^{-1}}\]
D.	\[137.5\text{ }kg\text{ }{{s}^{-1}}\]
Answer» C. \[185.5\text{ }kg\text{ }{{s}^{-1}}\]