A rocket has a mass of 21000 kg of which is fuel. The rocket engine can exhaust fuel at the rate of `190 kg s^(-1)` withan exhaust velocity `2500 ms^(-1)` relative to the rocket. If the rocket is fired vertically upwards, its final velocity at the burn out is (in `ms^(-1)`) [given ln (3.5) = 1.253]

Options

A. 2735
B. 2935
C. 2535
D. 1975

Answer

A