Comment 74596

By elbiot (anonymous) | Posted February 21, 2012 at 17:56:49 in reply to Comment 71416

btw, the article says it takes 25% less energy to speed up from 8 km/hr rather than stopped to 16km/hr. I think the author means 25% OF the energy, which is 75% less. right? because velocity is squared when computing energy, so twice the speed involves 4x the energy.

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