The shutter speed used in all three photos was 1/1.3. The person in the photo moved while the picture was taken which caused the ghost effect. Since the camera was slow to snap, she was able to still move and that's why the photos came out like they did. The slower the shutter speed and more places you go to the better the ghost effect comes out. All the movements are shown in one photo. I think the last picture is the best out of all.
The shutter speed used in this picture was 10. We stayed on one side for 5 seconds, then quickly went to the other side for the next 5.