if he is on a swim team than about 35 seconds and if he is not and just trying it about 40 to 45
Well, it depends on how hard and how many times a week they train. I have a 10 year old brother who swims 50 metres freestyle in 33 seconds, but he is a regional qualifier and is rather good for his age.
About 16 seconds for a slim semi-fast girl
1,ooo mph ( miles perh hour )
Okay for an average 14 yr old girl to run the 400 metre is 1 minute 20 seconds
my time now is a 1:03
what is the average height and weight for a one year old girl/ what is the average height and weight for a one year old girl/