Relativistic energy and Minkowski space (ASGv2Ch32Lect03)

We spent several weeks in this course learning about things like "newton's second law of motion" and the "conservation of momentum". Now that we are making a transition from Newton's "classical mechanics" to Einstein's "relativistic mechanics", it is natural to ask: do the formulae that we have learned from classical mechanics still work? The answer is a qualified "yes"...