PPT Slide
Although relative velocity may seem somewhat intuitive,
it turns out that the one and 2D examples we just did are
only approx. correct for small velocity
(ɘ.1c~30 million meters per second).
That is, velocities don’t generally simply add!
In this class, however, we will always treat velocities
as if they did add. In 9D you will learn special
relativity and how to calculate relative velocities