Donovan Bailey of Canada broke the world record in the 100m dash at the 1996 Atlanta Olympics with a time of 9.84 seconds. With this gold medal, he became "the world's fastest man"

a.

What was his average velocity over this distance in meters per second and miles per hour?

b.

A couple of days later, Michael Johnson set the world record in the 200m dash with a time of 19.32 seconds. What was his average speed?

c.

Is Donovan Bailey the world's fastest man?

• Hint:
• Solution: part a.
• Solution: part b.
• Solution: part c.