Chapter 37, Problem 25P

In Fig. 37-9, observer S detects two flashes of light. A big flash occurs at x₁ = 1200 m and, 5.00 µs later, a small flash occurs at x₂ = 480 m. As detected by observer S', the two flashes occur at a single coordinate x'.ċ(a) What is the speed parameter of S', and (b) is S' moving in the positive or negative direction of the x axis? To S', (c) which flash occurs first and (d) what is the time interval between the flashes?