For an adult human in good shape, I'll be honest: not very fast.
13 mph
From 10 to 40 mph
9.6 sec that's how fast i can run a 40 dash
13.5 mph
80.25 yards
If the peacock is in very grave danger it will do 100 yards, peace of cake and can reach speeds up to 40-50 mph. That would be very rare, but I garantee you I have seen this happen with my own eyes back in India!
A good rule of thumb is to keep a distance of one car length, about 10 feet, for every 10 mph of speed, so at 40 mph, you should be 40 feet behind the car in front of you. Obviously, this is harder to do in heavy traffic.
about 40 mph
22.7 mph
40 mph
Running 40 yards in 4.2 seconds is equal to running 19.5 MPH.
To convert a time in seconds to miles per hour, you first need to convert the distance to miles. 40 yards is approximately 0.02273 miles. Then, you can calculate the speed by dividing the distance by the time in hours. For 4.3 seconds over 40 yards, the speed is approximately 1.25 mph.