These are typical hillslope shapes.
Even though the hillslope is non-uniform, a uniform hillslope is often assumed in RUSLE2 to compute soil loss on the upper eroding portion of the hillslope.
Such as approach is often satisfactory for most conservation planning.
However, in some cases like concave:convex hillslope, the entire hillslope needs to be considered to obtain an accurate soil loss estimate.  Even though deposition occurs on the midpart of this hillslope, the entire hillslope length has to be considered because of the origin of the runoff that flows over the lower portion.
RUSLE2 can be used to compute soil loss, deposition, and deposition for each of these slope shapes by dividing the slope into segments.