Boys' own book : a complete encyclopedia of athletic, scientific, outdoor, and indoor sports (1881)
Clarke, William, 1800-1838 · New York : J. Miller, Publisher · leaf 361
he force ofgravity drawing itdownward; and x zthat of projection. Wehave here, then, twoforces acting in the di-rection of the two sidesof a parallelogram. Inpassing on to z, the ballwiU perform the diago-nal X a; and in the next equal space of time, wiU descendthrough three times the distance z a,… … MADE SCIENCE IN EARNEST. 81 the ground at d^ having descrihed the portion of a curve fi*omX to d^ or during the time that the two forces were in simul-taneous operation. The same principle wOl explain the curvedascent of the ball, substituting only the laws of retarded forthose of accelerated…
Amusements · Games · Sports
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