Solution:
Solution:
Acceleration of the rocket at any instant $$t$$ is
$$a =\frac{v_{r} \frac{d \,m}{d \,t}} {M-t\frac{d\,m}{d \,t}}$$
Here, $$M=6000 \, kg,$$ $$\frac{d\, m}{d \,t}$$ $$=16 \, kg $$ $$s^{-1}$$
$$v_{r}$$ $$=11 \,km$$ $$s^{-1}$$ $$=11000 \,m$$ $$s^{-1},$$ $$t=1$$ $$min =60\, s$$
$$\therefore\quad$$ $$a$$ $$=\left[\frac{11000\times16}{6000-60\times16}\right]$$ $$m s^{-2}$$ $$\approx35 \,m$$ $$s^{-2}$$
