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[Urgent] of a person riding a bicycle in order to 6m / s speed dashed to a 100m long slope to the to

Thymyth2010-03-29 09:11:48 +0000 #1
want to process ....
evil Huang small-Lie2010-03-29 09:27:14 +0000 #2
used before and after the subject no clear formula for the speed can go to some unknown amount of force to analyze the situation



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