A Subatomic Particle Moving at 0 $\mu$ S Before Decaying $\mu$ S
B) 1

Multiple Choice

A subatomic particle moving at 0.95 c is measured in the laboratory to live 1.5 $\mu$ s before decaying. The lifetime of the particle in a rest frame is

A) 0.47 $\mu$ s.
B) 1.5 $\mu$ s
C) 4.8 $\mu$ s.
D) 15 $\mu$ s.