Comments on: Challenges http://chemistscorner.com Cosmetic science resource site where you can learn all about cosmetic chemistry Tue, 07 Sep 2010 15:40:27 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Perry http://chemistscorner.com/challenges/comment-page-1/#comment-1125 Perry Tue, 23 Feb 2010 16:12:46 +0000 http://chemistscorner.com/?page_id=417#comment-1125 @Dami - You got it!!! @Dami – You got it!!!

]]> By: Dami http://chemistscorner.com/challenges/comment-page-1/#comment-1124 Dami Tue, 23 Feb 2010 16:06:42 +0000 http://chemistscorner.com/?page_id=417#comment-1124 assume, usain did 100m in 10s. his speed must be 10m/s. In that time , kelly did 90m. her speed must have been 9m/s. Then kelly must have done 100m in 11.1s @ 9m/s perry did 90m in 11.1s his speed will be 8.1m/s. perry must have done 81m in 10s when usain did 100m. Then , usain must have been 19m ahead of perry! Perry is this correct,lol assume, usain did 100m in 10s. his speed must be 10m/s. In that time , kelly did 90m. her speed must have been 9m/s. Then kelly must have done 100m in 11.1s @ 9m/s
perry did 90m in 11.1s
his speed will be 8.1m/s. perry must have done 81m in 10s when usain did 100m.
Then , usain must have been 19m ahead of perry!

Perry is this correct,lol

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