Shutter Speed Selection Based on Scenario

Here are some basic scenarios and typical shutter speeds which you can use

Shutter speed  in Seconds           Scenario

1/4000	Freezing Extremely Fast movement
1/2000	Freezing birds in flight
1/1000	Freezing fast cars,bikes,etc
1/500	freezing sports players or slow verhicles
1/250	Freezing walking people or animals
1/125	Panning cars or bikes
1/60	Portraits
1/30	Panning vehicle with shadow effect
1/15	Panning children or adults
1/8	Blurring water falls
1/4	Blurring people
1/2	Blurring slow moving water
1 sec or slower	Milky Water Effect