A single-stage rocket has a structural mass MS=115 tonnes, a payload mass MP=2 tonnes, the structural efficiency is =0.085. The specific impulse is ISP=355s. 1) Compute the mass ratio [5 marks] 2) Compute the velocity V in vertical ascent through the Tsiolkosky's equation discarding both gravity loss and aerodynamic effect (drag). [5 marks] 3) If the thrust-to-weight ratio at launch is =2.0, then calculate a revised value of the velocity V in vertical ascent now accounting for the gravity loss but discarding the drag. [12 marks] 4) In the turn over trajectory under the assumption of constant pitch anqle the rocket vehicle turns of an angle =35, calculate the new value of the velocity including gravity loss and under the assumption of zero aerodynamic forces. [13 marks]