A 3000 kg rocket is fired. If the exhaust speed is `500 ms^(-1)`, how much gas must be ejected per second to supply the thrust needed, (a) to overcome the weight of the rocket, (b) to give the rocket an initial acceleration of `19.6 ms^(-2)` ?

Options

A. 58.8 Kg/s , 176.4 Kg/s
B. 132.8 Kg/s , 82.5 Kg/s
C. 72.5 Kg/s , 138.2 Kg/s
D. 93.2 Kg/s , 185.6 Kg/s

Answer

A