55-65
if he runs a lot then he could be 110
speed = distance/time = 330 m / 40 s = 8.25 m/s
Average about 10-15 mph
Speed (m/s) = Distance (m) / Time (s)Speed = 400 / 50Average Speed = 8 metres per second
yes it could be height runs through the family
I doubt that any serious rigorous studies have been done on this, and further doubt there would be much difference in the average speed. That said, I suspect that in a large enough sample, the fastest boy will be faster than the fastest girl.
I am 14 years old. And I can run about 20 mph. But I run every day, the average is about 14 - 16.
Good time for average 16 year old boy: 12.5s Average time for average 16 year old boy: 13s Average time for a good 16 year old boy: 11.5s Good time for a good 16 year old boy 11s
The answer depends on the boy's age.
Well, you see! The speed for a 17-year old boy is simply faster, right? So the speed is 21.6km/hr!
an average nine year old boy's weight is about 75 to 90 pounds