翻訳と辞書 Words near each other ・ JouleX ・ Joule–Thomson effect ・ Jouli ・ Joulter Cays ・ Joulu (album) ・ Joulupukki ・ Joulupöytä ・ Joulutarina ・ Joulutorttu ・ Joulutorttu (album) ・ Joumana Haddad ・ Joumana Kidd ・ Joumocetus ・ Joun ・ Jounama Dam ・ Jounce ・ Jounen Kwéyòl ・ Joung Da-woon ・ Joungane Peaks ・ Jouni Helminen ・ Jouni Hynynen ・ Jouni Inkala ・ Jouni Joensuu ・ Jouni Kaipainen ・ Jouni Kaitainen ・ Jouni Kallunki ・ Jouni Kortelainen ・ Jouni Loponen ・ Jouni Mykkänen ・ Jouni Pellinen Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Jounce ： ウィキペディア英語版 Jounce In physics, jounce or snap is the fourth derivative of the position vector with respect to time, with the first, second, and third derivatives being velocity, acceleration, and jerk, respectively; hence, the jounce is the rate of change of the jerk with respect to time. Jounce is defined by any of the following equivalent expressions: :$\backslash vec\; s\; =\backslash frac\; =\backslash frac\; =\backslash frac\; =\backslash frac$ The following equations are used for constant jounce: :$\backslash vec\; j\; =\; \backslash vec\; j\_0\; +\; \backslash vec\; s\; \backslash ,t$ :$\backslash vec\; a\; =\; \backslash vec\; a\_0\; +\; \backslash vec\; j\_0\; \backslash ,t\; +\; \backslash frac\; \backslash vec\; s\; \backslash ,t^2$ :$\backslash vec\; v\; =\; \backslash vec\; v\_0\; +\; \backslash vec\; a\_0\; \backslash ,t\; +\; \backslash frac\; \backslash vec\; j\_0\; \backslash ,t^2\; +\; \backslash frac\; \backslash vec\; s\; \backslash ,t^3$ :$\backslash vec\; r\; =\; \backslash vec\; r\_0\; +\; \backslash vec\; v\_0\; \backslash ,t\; +\; \backslash frac\; \backslash vec\; a\_0\; \backslash ,t^2\; +\; \backslash frac\; \backslash vec\; j\_0\; \backslash ,t^3\; +\; \backslash frac\; \backslash vec\; s\; \backslash ,t^4$ where :$\backslash vec\; s$ : constant jounce, :$\backslash vec\; j\_0$ : initial jerk, :$\backslash vec\; j$ : final jerk, :$\backslash vec\; a\_0$ : initial acceleration, :$\backslash vec\; a$ : final acceleration, :$\backslash vec\; v\_0$ : initial velocity, :$\backslash vec\; v$ : final velocity, :$\backslash vec\; r\_0$ : initial position, :$\backslash vec\; r$ : final position, :$t$ : time between initial and final states. The notation $\backslash vec\; s$ (used in 〔) is not to be confused with the displacement vector commonly denoted similarly. Currently, there are no well-accepted designations for the derivatives of jounce. The fourth, fifth and sixth derivatives of position as a function of time are "sometimes somewhat facetiously"〔 〕 referred to as snap, crackle and pop respectively. Because higher-order derivatives are not commonly useful, there has been no consensus among physicists on the proper names for derivatives above jounce. Despite this, physicists have proposed other names such as "lock", "drop", "shot" and "put" for higher-ordered derivatives. The dimensions of jounce are distance per (time to the power of 4). In SI units, this is "metres per quartic second", "metres per second per second per second per second", m/s4, m · s−4, or 100 Gal per second squared in CGS units. This pattern continues for higher order derivatives, with the 5th being m/s5. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jounce」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.