DEFINITIONS: Define the following terms.

Force (F) - a physical quantity that can affect the motion of an object.

Mass (m) - A measure of the amount of material.

Pressure (p) - The force applied over a unit area.

Velocity (V) - Speed (distance per time) in a particular direction.

Density (r) - Mass per unit volume.

1. Find the total air pressure detected by the pitot tube for a Cessna 182 airplane flying at a pressure altitude of 10,000 feet (static pressure of 1455.6 lb/ft² ) and a speed of 120 knots if the air density is 0.00162 slugs/ft³?
   pt = 1455.6 lb/sq ft + [(0.00162 sl/cu ft) (120 kts x 1.69 ft/s/kt)/2] = 1489 lb/sq ft
   
   
2. Find the difference in pressure (p_t-p_s) for the same conditions described above if the airplane speeds up to 160 knots.
   pt-ps = [(0.00162 sl/cu ft)(160 kts x 1.69 ft/s/kt)2] /2 = 59.22 lb/sq ft
   
   
3. If the total air pressure for the same Cessna 182 is measured at 1478.7 lb/ft², what is the new velocity in knots of the airplane?
   V = [2(1478.7 lb/sq ft - 1455.6 lb/sq ft)/0.00162 sl/cu ft]1/2 = 169 ft/sec/1.69 ft/sec/kt = 100 kts

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