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23 Cards in this Set
- Front
- Back
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Vector
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a quantity that represents magnitude and direction
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Force
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a push or pull exerted on a body
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Volume
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amount of space occupied by an object
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Density
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mass per unit of volume
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Mass
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quantity of molecular material that comprises an object
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Weight
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the force with which a mass is attracted toward the center of the Earth by gravity
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Potential energy
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ability of a body to do work because of its position or state of being
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Moment
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what is created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point
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Work
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force x distance
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Power
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work done per unit time
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Kinetic energy
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the ability of a body to do work because of its motion
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Conservation of energy
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energy cannot be created nor destroyed but may be transferred from one form to the other
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Newton's 1st Law of Motion
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a body at rest tends to remain at rest and a body in motion tends to remain in motion in a straight line at a constant velocity unless acted upon by some unbalanced force
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Newton's 2nd Law of Motion
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F = ma
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Newton's 3rd Law of Motion
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for every action, there is an equal and opposite reaction
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Ambient static pressure
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measurement of the weight of an air column over a specific area.
increasing altitude, decreasing ambient static pressure |
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Air density
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total mass of air particles for a given volume
increasing altitude, decreasing density |
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Temperature
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measure of average kinetic energy of air particles
std laps rate = -2*C per 1000' |
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Dynamic Pressure
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measure of impact pressure of a large group of air molecules moving together
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Total Pressure
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sum of static and dynamic pressure
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Static pressure
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force that molecules of air exert on each other by their random movement
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Since total pressure is constant for all points in a streamtube...
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if dynamic pressure increases at a point, then static pressure must decrease
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Pressure altitude
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height measured above a standard datum plane; the standard datum plane is the actual elevation at which the barometric pressure is equal to 29.92 in-Hg
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