stylistic:style_transfer, linguistic:paraphrasing, structural:summarization, stylistic:tone, information:classification
Scalar velocities

In the one-dimensional case, the velocities are scalars and the equation is either: v rel = v − (− w), {\displaystyle v_{\text{rel}}=v-(-w),} if the two objects are moving in opposite directions, or: v rel = v − (+ w), {\displaystyle v_{\text{rel}}=v-(+w),} if the two objects are moving in the same direction.