SIFT: Army Aviation Information Test 2023 already passed

SIFT: Army Aviation Information Test First Law of Motion - correct answer an object at rest will stay at rest, an object will remain in motion unless acted upon by an unbalanced force such as gravity or friction Four Types of Friction - correct answer 1) sliding, kinetic friction 2) fluid friction 3) rolling friction 4) static friction Sliding, Kinetic friction - correct answer results when the surface of one object slides along the surface of another object Fluid Friction - correct answer resistance on an object when it is moved through either gas or liquid Rolling Friction - correct answer sliding friction except it is rolling Static Friction - correct answer what keeps an object at rest when object is acted upon by external force Second Law of Motion - correct answer when a body is acted upon by a constant force, its resulting acceleration is inversely proportional to the mass of the body and directly proportional to applied force force = mass * acceleration Third Law of Motion - correct answer if two objects interact, the force exerted by the first object on the second object is equal in magnitude and opposite in direction to the force exerted by second on the first Law of Universal Gravitation - correct answer a particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them F = G * (m1m2)/(D^2) Bernoulli's Principle - correct answer within a horizontal flow of fluid, points of faster speed will experience less pressure than points of slower fluid speed, curvature of airplane wings causes air to pass faster over the top of the wing (creating a lower pressure area) than under the wing (a higher pressure area) creating lift Flight Envelope - correct answer encompasses the limits of speed, altitude, and angle of attack required by any aircraft to maintain a stable flight Angle of Attack - correct answer angle between the direction of the airflow against the wing (relative wind) and the chord, imaginary reference line that extends from the leading edge to the trailing edge of wing Downwash - correct answer as air passes over the end of the wing, or over the end of the helicopter rotor blade, it changes direction, and deflects the air downward Drags during Flight - correct answer 1) Parasite Drag 2) Profile Drag 3) Induced Drag Parasite Drag - correct answer any structure on the aircraft that increases turbulence on the aircraft