Changes

==Etymology==

==Etymology==

[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] spede, from [http://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] spēd;  akin to Old High German spuot prosperity, speed, Old English spōwan  to succeed, [[Latin]] spes [[hope]], Lithuanian spėti to be in [[time]]

[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] spede, from [https://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] spēd;  akin to Old High German spuot prosperity, speed, Old English spōwan  to succeed, [[Latin]] spes [[hope]], Lithuanian spėti to be in [[time]]

*Date: before [http://www.wikipedia.org/wiki/12th_Century 12th century]

*Date: before [http://www.wikipedia.org/wiki/12th_Century 12th century]

<center>For lessons on the related [[topic]] of '''''[[Acceleration]]''''', follow [http://nordan.daynal.org/wiki/index.php?title=Category:Acceleration '''''this link'''''].</center>

<center>For lessons on the related [[topic]] of '''''[[Acceleration]]''''', follow [https://nordan.daynal.org/wiki/index.php?title=Category:Acceleration '''''this link'''''].</center>

==Definitions==

==Definitions==

[[File:Speed_of_light_from_Earth_to_Moon.gif‎|center|frame|<center>Speed of light from [[Earth]] to the Moon.</center>]]

[[File:Speed_of_light_from_Earth_to_Moon.gif‎|center|frame|<center>Speed of light from [[Earth]] to the Moon.</center>]]