Chapter 27, Problem 2MCP

A rocket is travelling at $\frac{1}{3}C$ relative to earth when a light bulb in the center of a cubical room is suddenly turned on. An astronaut at rest in the rocket and a person at rest on earth both observe the light hit the opposite walls of the room (See Figure 27 22.) We shall call these events A and B. Which statements about the two events are true? (There may be more than one true statement )

Figure 27.22

Multiple-Choice Problem 2.

1. A.    To the observer on earth, both events happen at the same time.
2. B.     To the astronaut, both events happen at the same time.
3. C.     To the observer on earth, event B happens before event A.
4. D.    To the astronaut, event A happens after event B.