Question

23. In a rocket, fuel burns at the rate of 2 kg/s. This
fuel gets ejected from the rocket with a velocity of
80 km/s. Force exerted on the rocket is
(1) 16,000 N
(2) 1,60,000 N
(3) 1,600 N
(4) 16 N​

Answer 1

Correct option is

B

1.6∗10 ^5 N

Force= velocity of exhaust × dt/dm

∴F=80×10 ³×2

=1.6×10 ^5

Answer 2

Answer:

80 km/s. Force exerted on the rocket is

(1) 16,000 N

(2) 1,60,000 N

(3) 1,600 N

(4) 16 N

Explanation:

hope it helps u