Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 46
tural processes we pro-pose to usCj let us refer to any text-book on physics,and review briefly some of the natural laws relatingto motion and force which apply to the problem offlight: (a) Force is that power which changes ortends to change the position of a body, whetherit is in motion or at… … 46 LAWS OF FLIGHT. by a straight line—the point at which the forceis applied being the beginning of the line; thedirection of the force being expressed by the di-rection of the line; and the magnitude of theforce being expressed by the length of the line. (d) Two or more forces acting upon a…
Aeronautics
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