A rocket motor consumes 100 kg of fuel per second, exhausting it with a speed of 5 km/s. The speed of the rocket when its mass is reduced to 1/{20} th of its initial mass, is (Assume initial speed to be zero and ignore gravitational and viscous forces)

Correct Answer is : 5 ln (20) km/s

TS EAMCET 04 May 2019 Shift 1 Solved Paper

Section: Physics

Question : 89 of 160

Marks: +1, -0

A rocket motor consumes 100 kg of fuel per second, exhausting it with a speed of 5 km/s. The speed of the rocket when its mass is reduced to

th of its initial mass, is
(Assume initial speed to be zero and ignore gravitational and viscous forces)

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