Answer
Celia will find that the flash from the left will reach her ship before the flash from the right. According to Abe, this occurs because her ship is moving toward the left flash. As per Celia, however, the two pulses travel equal distances to reach her, so the flash from the left must have been emitted earlier than the flash from the right.
Work Step by Step
Celia will find that the flash from the left will reach her ship before the flash from the right. According to Abe, this occurs because her ship is moving toward the left flash. As per Celia, however, the two pulses travel equal distances to reach her, so the flash from the left must have been emitted earlier than the flash from the right.