If M is mass of rocket, r is rate of ejection of gases with respect to – McqOptions

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1.	If M is mass of rocket, r is rate of ejection of gases with respect to rocket, then acceleration of the rocket \[\frac{dv}{dt}\] is equal to
A.	\[\frac{ru}{(m-rt)}\]
B.	\[\frac{(m-rt)}{ru}\]
C.	\[\frac{ru}{(m+rt)}\]
D.	\[\frac{ru}{m}\]
Answer» B. \[\frac{(m-rt)}{ru}\]

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