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Old 10-26-2018, 05:07 PM   #2 (permalink)
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That's too much of a simplification.

P=mv - that is, energy equals mass times velocity. The more speed you can preserve, the more efficient it is. If you're going 1 MPH as you roll through the intersection, you haven't saved much energy at all.

Slowing well before reaching a stop to preserve momentum is one of the driving tips to maximize fuel economy.
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