According to Jean Piaget , the intuition for the notion of speed in humans precedes that of duration, and is based on the notion of outdistancing.  Piaget studied this subject inspired by a question asked to him in 1928 by Albert Einstein : "In what order do children acquire the concepts of time and speed?"  Children's early concept of speed is based on "overtaking", taking only temporal and spatial orders into consideration, specifically: "A moving object is judged to be more rapid than another when at a given moment the first object is behind and a moment or so later ahead of the other object." 
not true. My daughter started pitching when she was 9. She is now 11, but considered a 10year old in the softball world. I moved her up this year into the 12U league, because from 35ft. she threw well into the 60s which was too fast for the girls in that league. She honestly is a natural and she loves it. That is what it takes to be a great pitcher. She also puts in the time and dedication that it takes. We do not push her. She also has the size to back up suck velocity. She has a killer change up and can work the corners. I was a pitcher, and who knows maybe it's genetic, but yes no matter the age focus and determination can happen at any age. Oh yeah, she played baseball for the first 4 years.
Morse is still widely used by amateur radio operators (hams). Experienced hams routinely send Morse at 20 words per minute, using manually operated hand telegraph keys ; enthusiasts such as members of The CW Operators' Club routinely send and receive Morse code at speeds up to 60 wpm. Twenty words per minute (20wpm) represents the rough upper limit for Morse operators attempting to write down Morse code received by ear using paper and pencil. Many skilled Morse code operators can receive Morse code by ear mentally without writing down the information at speeds up to 70 wpm. To write down the Morse code information manually at speeds higher than 20 wpm it is usual for the operators to use a typewriter or computer keyboard to enable higher speed copying.