Radar gun.
Contact or ask the American Quarter Horse Association (AQHA) about their speed index chart. It is issued annually so the one you find may not be the most recent one.
the speed
The average is 4 mph, but it depends on the horses speed.
average is 45 MPH
in the wild they were made to flee from predators
30, 40 MPH
I'm sure that average speed would be easier to calculate than instantaneous speed. To calculate average speed, just take the time that it takes to travel between two points, and divide that into the distance between the points.
It depends on the breed.
Speed = Wavelength X Frequency
time = distance ÷ speed
Speed = Wavelength X Frequency
Yes.