POF - Mock Exam

What percentage of the atmosphere is Nitrogen

• 21%

• 100%

• 78%

• 1%

What is ISA sea level density?

• 1225 kg/m³

• 1.225 kg/m²

• 1.225 kg/m³

• 0.1225 kg/m²

What happens to air pressure with a gain in altitude?

• Increases

• No change

• Decreases

• Gains more energy

Select all values that are ISA values at sea level

• 15°C

• 1013.25 hPa

• 1.225 kg/m³

• 1013.25 Inches of Mercury

At approximately 18,000 - 20,000' what will the pressure be compared to sea level

• The same as sea level pressure

• 75% of sea level pressure

• 25% of sea level pressure

• Half of sea level pressure

Select all below that effect density altitude

• Pressure

• Speed

• Weight

• Humidity

• Temperature

What attributes does a vector have?

• Magnitude

• Direction

• Magnitude and Direction

• Magnitude and Time

Which if these is NOT a SI unit?

• Metre (m)

• Kilogram (kg)

• Watt (W)

• Kelvin (K)

• Knot (kn)

What is Newtons Second Law?

• F = na

• The external force acting on a body is proportional to the product of it’s mass and the acceleration produced by the force

• The external force acting on a body is inversely proportional to the product of it’s mass and the acceleration produced by the force

• Every object continues in its state of rest or of uniform motion in a straight line, unless acted upon by an external force

What is newtons Third Law?

• For every action, there is an equal reaction felt 90° clockwise

• For every action, there is an equal reaction felt 90° anticlockwise

• The external force acting on a body is proportional to the product of it’s mass and the acceleration produced by the force

• For every action, there is an equal and opposite reaction