The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 39
o-nal a,f, between the forces. Ifthe springs be drawn out so as toact unequally on a, they may beso regulated as to drive it in anydirection between c,f, and e,f. Many wonderful feats of circus-riders are examples of resultantmotion ; such as jumping from theback of a horse in rapid motion,over a… … How is resultant motion illustrated in case of a steamboat attempting to crossa river ? 34 RESULTANT MOTION. the force of the steam sufficient to drive it to A in ten min-utes, while the force of the current is sufficient to carry it in thesame time to A. If, now, steam and current act…
Physics
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