There was a high shutter speed here, probably about 1/ 50.

The shutter speed for this photo was really slow. The photographer used panning here.
There is panning in this photo, so the shutter speed was probably really slow.
There is a pretty high shutter speed used for this photo. since there is motion, a shutter speed of 1/ 250 was probably used.
This photo has a higher shutter speed, because of its sharpness.

This photo has a slow shutter speed, because the cars are blurred. Panning was most likely used here, requiring a shutter speed of about 1/ 30 or 1/60.