(A2-1) From Nefertiti’s point of view, the drone’s initial spatial coordinate is xNo, which will have a negative value because the drone is to the left of Cormorant and his coordinate at time zero is 0 in both frames of reference.
However we know that the distance between Cormorant and drone has been squashed in Nefertiti’s reference frame by their movement, relative to her, so we can apply the length contraction formula from Chapter 2 to get an expression for the drone’s x-coordinate in Cormorant’s frame of reference:
