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 38
nd upon measuring these angles they will befound equal. ^igi3. 22. Resultant Motion. — When a body is struckat the same instant by twoforces, whether equal orunequal, instead of follow-ing the direction of eitherit will move in a line be-tween these forces ; this lineor direction will be…
Physics
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