A rocket with an initial mass of 1000 kg is launched vertically upwards from rest under gravity. The rocket burns the fuel at the rate of `10kg s^(-1)`. The burnt matter is ejected vertically downwards with a speed of `2000 ms^(-1)` relative to the rocket. If burning is complete after 1min, find the maximum velocity of rocket. (GIven `g = 10 ms^(-2)` and In 2.5 = 0.916)

Options

A. `1232 ms^(-1)`
B. `1000 ms^(-1)`
C. `1423 ms^(-1)`
D. `1523ms^(-1)`

Answer

A