Guide to minimum shutter speeds for freezing movement…
according to John Hedgecoe’s Creative Photography Work Book:

Walking (3mph)
Medium shot 1/250 sec
Long shot 1/125 sec
Panning 1/30 sec
Diagonal movement 1/125 sec

Running (13mph)
Medium shot 1/500 sec
Long shot 1/250 sec
Panning 1/125 sec
Diagonal movement 1/250 sec

Kicking ball
Medium shot 1/1000 sec
Long shot 1/500 sec
Panning 1/125 sec
Diagonal movement 1/1000 sec

Car (50mph)
Medium shot 1/4000 sec
Long shot 1/2000 sec
Panning 1/125 sec
Diagonal movement 1/1000 sec