Thread: Going up steep hills- downshift or floor it?
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Old 04-16-2012, 05:47 AM   #72 (permalink)
Sven7
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Quote:
Originally Posted by jtbo View Post
Why rolling resistance increases with the speed?
I imagine the tire sidewall has less time to deform when it is spinning faster, which means your car has to expend more energy to do so. mass X force = acceleration
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