Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ifferent direction, changestheir course. Suppose FL to be a floor, made ofmarble or some other elastic substance,and N an ivory or some kind of anelastic ball, thrown toward the floorin the direction of the line KN ; itwill be reflected in the direction ofXH, making the angles KNL andHNF equal. If… … MOTION AND FORCE. 51 the normal and NH is the angle of reflection, and these angles arealways equal. 58. Figure 16. —Resultant motion.—This is produced by twoor more forces, termed components, acting in different directions onthe same body at the same time. When several forces act on a body they…
Physics · Astronomy
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