The Acceleration and climbing resistance also contributes to the overall road resistance on the moving vehicle.
Accelerating and Deceleration:
When the vehicle moves on acceleration, mass inertia forces arise in the opposite direction of the acceleration. As deceleration is negative acceleration the inertia forces have their effect with the direction of the movement of the vehicle. The proportion of inertia forces in the overall road resistance is called Acceleration resistance.
Translational and Rotational:
The Acceleration resistance is divided in to 1) Translational Part and 2) Rotational part. A Translational part resulting from the total mass of the vehicle and a rotational part arises due to the mass inertia of the rotating components of the vehicle drive unit. The rotational part is relatively insignificant as regard to the total road resistance.
Climbing Resistance:
The climbing resistance is the proportion of the overall road resistance that is influenced by the Topography (Ref. fig)
Source: Autobei
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