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Talk:Essay:Rebuttal to Counterexamples to Relativity (view source)
Revision as of 20:16, October 14, 2014
, 20:16, October 14, 2014→Aristotle and Motion: conservation of momentum.
[http://dhspriory.org/thomas/Physics4.htm#8 In Book 4, Chapter 8 of Physics], Aristotle taught that "We see that bodies which have a greater impulse either of weight or of lightness, if they are alike in other respects, move faster over an equal space, and in the ratio which their magnitudes bear to each other. Therefore they will also move through the void with this ratio of speed." [[User:MelH|MelH]] 03:01, 14 October 2014 (EDT)
[http://dhspriory.org/thomas/Physics4.htm#8 In Book 4, Chapter 8 of Physics], Aristotle taught that "We see that bodies which have a greater impulse either of weight or of lightness, if they are alike in other respects, move faster over an equal space, and in the ratio which their magnitudes bear to each other. Therefore they will also move through the void with this ratio of speed." [[User:MelH|MelH]] 03:01, 14 October 2014 (EDT)
:This seems to refer to the conservation of momentum of the type which occurs for example when a body collides with a stationary body. So that since ''mv''<sub>1i</sub> + 0 = ''mv''<sub>1f</sub> + ''mv''<sub>2f</sub> therefore ''mv''<sub>1i</sub> - ''mv''<sub>1f</sub> = ''mv''<sub>2f</sub>. The ''mv''<sub>1i</sub> - ''mv''<sub>1f</sub> is the impulse ''J''. So impulse ''J'' is equal to ''mv''<sub>2f</sub>, and bodies that are alike (the condition supposed by Aristotle) have the same ''m'' mass, so that ''J'' x constant (1/''m'') = ''v''<sub>2f</sub>. Therefore the ratio of ''J'' to ''v''<sub>2f</sub> is a constant (which incidentally is none other than ''m''), so ''v''<sub>2f</sub> does increase (move faster) in proportion to ''J'' by the constant ratio (1/''m''). [[User:VargasMilan|VargasMilan]] 16:16, 14 October 2014 (EDT)