There really isn't an average time because it varies about how fast people are.
But I would say around 59.999 seconds?
A good time would be 29 seconds.
My 8 year old son just swam it in a minute and 5 seconds
Most likely 18 seconds or slower.
2 seconds
Around 10 minutes
2 second
8 to 10 minutes.
What is the average weight for a 43 year old male
150 seconds
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.
I think anything under 30 seconds is pretty good.
For a male 14 year old male it would be about 5'3'' to 5'7'' at average.