Answer:
Explanation:
Usain Bolt
Part A
d = 200 m
t = 19.30 seconds
r = d/t
r = 200 / 19.30
r = 10. 36
r = 10.4 m/s
Part B
d = 400 meters
t = 43.18 seconds
r = d/t
r = 400/43.18
r = 9.26 m/s
r = 9.3
Not much difference.
Michael Johnson
Though you have not given us the distance, it was 100 meters. He was the first man to eclipse 9.7 seconds for the 100 meters.
d = 100 m
t = 9.69 seconds
r = 100 meters/9.69 seconds
r = 10.32 m/s
r = 10.3