47 mph
About 60 to high 60`s /67,68,69
It shoud be 60-75 miles per hour. A good 13 year old should be in the low to mid 50's. An average 13 year old is in the mid 40's.
the average typing speed for a 12 year old girl is about 50 words per minute.
Speed doing what? Running? Mathematical sums?
50 miles per hour or 55 miles per hour for a good pitcher throwing a fastball
55-65
3 miles per hour.
Im 13 and i ran it in 10.47 seconds
well it depends if your a pitcher or if you play the field if your a pitcher a good speed is from 75 to 85 if your a fielder a good pitch speed is from 65 to 75 as long as you got a good changeup to back it up
35 mph would be about average.
Typically if your a decent pitcher kids at 14 clock out at 60-70 but some rare breeds can pitch higher then that. If you want to make your pitch faster do some long toss and have good athletic mechanics.
Average about 10-15 mph