Question

For a Rocket propulsion velocity of exhaust gases relative to rocket is 1.6 km/s. If mass of rocket system is
800 kg, then the rate of fuel consumption for a rocket
to rise up with an acceleration 4.2 m/s2 will be :-

(1) 12.25 kg/s
(2) 17.5 kg/s
(3 7 kg/s
(4) 5.2 kg/s
​

Answer 1

Option (3) 7 kg/s

Hope it helps!