JEE Main Physics question
The rate of mass of the gas emitted from the rear of a rocket is initially 0.1 kg s⁻¹. If the speed of the gas relative to the rocket is 50 ms⁻¹ and the mass of the rocket is 2 kg, then the acceleration of the rocket (in ms⁻²) is
Answer: (C)
Solution
a = (dm//m = (0.1×50)/2 = 2.5 ms⁻².