Chapter 37, Problem 3Q

Reference frame S' is to pass reference frame S at speed v along the common direction of the x' and x axes, as in Fig. 37-9. An observer who rides along with frame S' is to count off 25 s on his wristwatch. The corresponding time interval ▵t is to be measured by an observer in frame S. Which of the curves in Fig. 37-15 best gives ▵t (vertical axis of the graph) versus speed parameter ß?

Figure 37-15 Questions 1 and 3.