Correct Answer : absolute ceiling
Explanation : Absolute ceiling is defined as the highest altitude at where Ps is zero. Geometric height or geometric altitude is based on height measured. Drag polar is graphical representation of drag properties.
Correct Answer : Option (D) : 147.6
Explanation : Average velocity at Flare = 1.23*stall speed = 1.23*120 = 147.6 knots.
Correct Answer : Option (C) : 26.4 unit
Explanation : For military aircraft, Approach speed = 1.2*stall speed = 1.2*22 = 26.4 unit.
Correct Answer : Option (A) : 90.90
Explanation : Stall speed = touchdown speed/1.1 = 100/1.1 = 90.90.