Question

An observer in frame S standing at the origin observestwo flashes of colored light separated spacially by Δx = 1700 m. A blue flash occurs first, followedby a red flash 8 µs later. Anobserver in S ' moving along the x axis at speedv relative to S also observes the flashes8 µs apart and with aseparation of 1700 m, but thered flash is observed first. Find the magnitude and direction ofv.
1m/s

2

-xdirection +ydirection -y direction +xdirection