The following is a standard problem found in many textbooks:
Problem: An observer in reference frame S observes that a lightning bolt strikes the origin and 10-4 s later a second lightning bolt strikes the same location.
1- What is the time separation between the two lightning bolts determine by a second observer in reference frame S' moving at a speed of 0.8c along the collinear x-x' axis?
Show all work, use additional paper if necessary.