From the muon's point of view, it reaches the ground because:

  1. the atmosphere is length-contracted
  2. its half-life increases in its own frame
  3. gravity pulls it
  4. it travels faster than light
Answer

A) the atmosphere is length-contracted

Equivalent explanation. SLO P-11-F-05 · Understanding

Physics MCQ · More Special Relativity MCQs · Practise