FYKOS Year 28 Series 3 Problem 4 — fast and beautiful · FYKOS 28 #28.3.4
Physics · optics
Problem
Teresa was approaching with a relativistic speed v a plane mirror. She was approaching perpendicularly to the mirror's plane. While doing so she is watching herself approach the mirror. What is the actual speed that she is approaching her image with and what is the speed she is observing?
Bonus: It isn't a plane mirror but a spherical one