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Originally Posted by Boreas
Is the term g ,in the rolling resistance equation essentially one, on the on the surface of earth. With minor variations due to elevation that are small enough to be ignored for fuel economy purposes?
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Gravitational force, g, varies slightly around the Earth.
It's slightly higher at the poles, lower at the equator, and gets lower as altitude increases.
Local geology (mountains, rock density) can also introduce small variations.
But we're talking about variations in the order of 0.5 %, tops.
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Is wind resistance an exponental equation due to the v squared term
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Yes.
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and the rolling resistance equation linear with constant slope due to v or no other them being squared?
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Due to no factors being squared.
(In the simplified formula.)
At speed, tyre deformation (result of the tyre spinning faster) will increase rolling resistance.
The more a tyre resists to deformation, i.e. the stiffer it is, the less RR will rise with increasing speed.