well im the fastest 15tn year old in Renfrewshire and thts got more than 1000 15tn year olds with a time of 12.4 seconds ( i think ) but when i was 13tn my time was around 13 seconds so i think thts a gd time
13 - 13.5 seconds
That's a fair time.
9.58s for men and 10.49s for women.
11.25 seconds
I was thinking the same thing but I found a solution:Basically 1 second= 0.00027778 hours.13mph- 0.06214(calculation of length of 100m)÷(0.00027778X13(your speed))This equals=17.21 seconds as your 100m dash time.It might look complicated but I simplified it.
Usain Bolt with 9.58s
Three seconds on the 100m dash!
around 30 seconds
Florence Griffiths-Joyner with 10.49s.
I do 14:89 but 15 or 16 seconds is also good
14. 56 is a good time
9.57 was mine