Question 1 An aircraft cruising at 1000m-elevation above you moves past in a flyby. How many seconds after the plane passes over your head do you expect to wait before you hear the aircraft if it is moving with a Mach number equal to 1.5 and the ambient air 1s at 20C? Question 2 - 2 " - " The average pressure and shear stress acting on the surface of a Im\" flat plate are as indicated in the Figure. Determine the lift and drag generated. mzngwmg? Tave = 5.83>c 107 kN/m / Pave = 2.3 kN/m? Tave = 7.6 x 1072 kN/m