in my hands!!!!
I guess use a high speed camera Time it and measure the distance travelled.
By Speed Radar !!
A radar gun measures speed of a moving object basically cops use them
Radar was first used to measure the speed of a moving object in 1935. By 1938, they were used to measure the speed of a fastball thrown by Bob Feller.
Doppler radar
A portable radar unit
You can use a radar gun to measure your break speed. On a simpler level, there is a smartphone app called Break Speed, which does just that.
A Radar gun
Radar is a system that uses radiowaves to measure things like size, distance and speed of a specific object.
160.43 by shaun tait
The speed is measured by radar from the batsman's end as the ball leaves the bowlers hand.
Using a radar gun similar to one used to measure speed of a baseball being thrown