A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 65
(perhaps 1600 feet per second 46 KINEMATICS. [50. in starting). For this reason the maximum distance isgained, not by an angle of 45° (as shown below), but foran angle of a little over 30°. A jet of water illustrates the subject of the projectilewell, since each particle may be considered as an… … £ *r £ jc Fig. 24. HAKis called the angle of projection, and the horizon-tal distance AKis the range. (a) From the triangle AHK, AH — ut and HK —igf; also, HK _ jgf _ gt2u sin a — t = AH ut 2u sin a9~~ (1) The value of t in (1) gives the time of flight.(b) Again, AK — AH cos a — ut.cos a; or,…
Mechanics
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