Question

A force on a rocket moving with a velocity of 100m/s is 210N. Then the rate of
combustion of the fuel will be:
(A) 3.5 kg/s (B) 2.1 kg/s (C) 1.4 kg/s (D) 0.7 kg/s​

Answer 1

Explanation:

F=d/dt(mv)

210/100

2.1kg Answer