The initial mass of a rocket is 1000 kg. Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of 20 ms^-2. The…

The initial mass of a rocket is $\displaystyle 1000$ kg. Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of $\displaystyle 20 \mathrm{~ms}^{-2}$. The gases come out at a relative speed of $\displaystyle 500 \mathrm{~ms}^{-1}$ with respect to the rocket : [Use $\displaystyle \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ ]