A rocket of mass $1000 \,kg $ exhausts gases at a rate of $4\, kg/sec$ with a velocity $3000 \,m/s$. The thrust developed on the rocket is ........ $N$
A rocket of mass $1000 \,kg $ exhausts gases at a rate of $4\, kg/sec$ with a velocity $3000 \,m/s$. The thrust developed on the rocket is ........ $N$
$12000$
$120$
$800$
$200$
A rocket of mass $1000 \,kg $ exhausts gases at a rate of $4\, kg/sec$ with a velocity $3000 \,m/s$. The thrust developed on the rocket is ........ $N$
$F = u\left( {\frac{{dm}}{{dt}}} \right) = 3000 \times 4 = 12000\;N$