QUESTION 2 A piston in a tube is suddenly accelerated to a velocity of 50 m/s, which causes a normal shock to move into the air at rest in the tube. Several seconds later, the piston is suddenly accelerated from 50 to 100 m/s, which, causes a second shock to move down the tube. Calculate the velocities of the two shock waves for an initial air temperature of 300 K. QUESTION 3 50 m/s Shock [7 Marks] V Air 17 Marks]