A rocket is fired vertically upward in a vaccum. During the burning process, the fuel mixture is expelled at a constant rate 1352 kg/s and the exhaust gas is ejected at a constant velocity with magnitude 523 m/s. (i) What percentage of the total initial mass M the rocket has to burn in order to accelerate to the speed of 605 m/s? (ii) What is the speed of rochet when 42% of its total initial mass M is ejected? (i) The rocket has to burn % of its total initial mass. Enter your answer to the nearest integer (whole number). (ii) The speed of the rocket ( relative to Earth) is equal to m/s. Enter your answer to the nearest m/s

A rocket is fired vertically upward in a vaccum. During the burning process, the fuel mixture is expelled at a constant rate 1352 kg/s and the exhaust gas is ejected at a constant velocity with magnitude 523 m/s. (i) What percentage of the total initial mass M the rocket has to burn in order to accelerate to the speed of 605 m/s? (ii) What is the speed of rochet when 42% of its total initial mass M is ejected? (i) The rocket has to burn % of its total initial mass. Enter your answer to the nearest integer (whole number). (ii) The speed of the rocket ( relative to Earth) is equal to m/s. Enter your answer to the nearest m/s