A rocket set for vertical firing weights 50 kg and contains 450 kg of fuel. It can have a maximum exhaust velocity of `2kms^(-1)`. (Given `g = 10 ms^(-2)`). What should be the minimum rate of fuel consumption of the rocket to just lift is off the launching pad ?

Options

A. `1.5 kg s^(-1)`
B. `2.45 kg s^(-1)`
C. `3kgs^(-1)`
D. `3.5 kg s^(-1)`

Answer

B