Relativistic time, length and velocity

What this note covers

1. Identify the events and reference frames
2. Recovering speed from a measured dilation or contraction
3. Collinear relativistic velocity addition
4. Transforming back and checking light-speed invariance
5. Particle lifetime and atmospheric distance in two frames
6. Design an answer that exposes assumptions and uncertainty

6 sections · 10 key terms & formulas · 6 common mistakes