Question

If the force on a rocket moving in force free space
with an exhaust velocity of gases 400 m/sec is
300 N, then the rate of combustion of the fuel, is :-
(1) 1.3 kg/s
(2) 0.75 kg/s
(3) 2.7 kg/s
(4) 0.3 kg/s​

Answer 1

Answer:

Answer would be 1.3kg/s

Answer 2

if F=300N

v = 400 m/s

then in that case , rate of combustion of fuel will be 0.75