OAR Exam Questions with Complete Solutions (Latest 2025) scalar - Correct Answers ✅quantity that represents only magnitude, e.g., time, temperature, or volume. It is expressed using a single number, including any units.vector - Correct Answers ✅quantity that represents magnitude and direction. It is commonly used to represent displacement, velocity, acceleration, or force.Displacement (s) - Correct Answers ✅the distance and direction of a body's movement (an airplane flies east 100 nm).Velocity (V) - Correct Answers ✅the speed and direction of a body's motion, the rate of change of position (an airplane flies south at 400 knots).Speed - Correct Answers ✅a scalar equal to the magnitude of the velocity vector.Acceleration (a) - Correct Answers ✅the rate and direction of a body's change of velocity (gravity accelerates bodies toward the center of the earth at 32.174 ft/s2).force (F) - Correct Answers ✅a push or pull exerted on a body (1,000 lbs of thrust pushes a jet through the sky). 1 / 4
OAR Exam Questions with Complete Solutions (Latest 2025) Mass (m) - Correct Answers ✅the quantity of molecular material that comprises an object.Volume (v) - Correct Answers ✅the amount of space occupied by an object Density (ρ) - Correct Answers ✅mass per unit volume. ρ = mass / volume Weight (W) - Correct Answers ✅the force with which a mass is attracted toward the center of the earth by gravity.Force (F) - Correct Answers ✅mass times acceleration. F = mx a moment (M) - Correct Answers ✅created when a force is applied at some distance from an axis or fulcrum, and tends to produce rotation about that point.Work (W) - Correct Answers ✅done when a force acts on a body and moves it. It is a scalar quantity equal to the force (F) times the distance of displacement (s).W=Fxs 2 / 4
OAR Exam Questions with Complete Solutions (Latest 2025) Power (P) - Correct Answers ✅he rate of doing work or work done per unit of time.P =W / t Energy - Correct Answers ✅scalar measure of a body's capacity to do work. There
are two types of energy: potential energy and kinetic energy.
Energy cannot be created or destroyed, but may be transformed from one form to another. This principle is called
conservation of energy. The equation for total energy is:
TE = PE + KE
Potential energy (PE) - Correct Answers ✅the ability of a body to do work because of its position or state of being. It is
a function of mass (m), gravity (g), and height (h):
PE = weight x height = mgh Kinetic energy (KE) - Correct Answers ✅the ability of a body to do work because of its motion. It is a function of
mass (m) and velocity (V):
KE = 1⁄2 mV2 NEWTON'S FIRST LAW - THE LAW OF EQUILIBRIUM - Correct Answers ✅"A body at rest tends to remain at rest and a body in motion tends to remain in motion in a straight line at 3 / 4
OAR Exam Questions with Complete Solutions (Latest 2025) a constant velocity unless acted upon by some unbalanced force." Equilibrium - Correct Answers ✅the absence of acceleration, either linear or angular.Equilibrium flight - Correct Answers ✅exists when the sum of all forces and the sum of all moments around the center of gravity are equal to zero. An airplane in straight and level
flight at a constant velocity is acted upon by four forces:
thrust, drag, lift and weight. When these forces exactly cancel each other out, the airplane is in equilibrium (Figure 1-3).Trimmed flight - Correct Answers ✅exists when the sum of all moments around the center of gravity is equal to zero. In trimmed flight, the sum of the forces may not be equal to zero. For example, an airplane in a constant rate, constant angle of bank turn is in trimmed, but not equilibrium, flight.An airplane in equilibrium flight, however, is always in trimmed flight.
NEWTON'S SECOND LAW - THE LAW OF ACCELERATION -
Correct Answers ✅"An unbalanced force (F) acting on a body produces an acceleration (a) in the direction of the force that is directly proportional to the force and inversely proportional to the mass (m) of the body."
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