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wind resistance
In fluid dynamics, drag (sometimes called fluid resistance) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface.
Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, the drag force depends on velocity. Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number.
Drag forces always tend to decrease fluid velocity relative to the solid object in the fluid's path.
After a couple of months of mostly around-town driving with some 100km/h stretches (averaging 13 kWh/100km) I did my first real motorway drive today with a 184 km round trip in my Excite 51 (SE SR).
I still got pretty pleasing efficiency in Eco mode with one-pedal and ACC, with aircon on about...
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