measuring system is used in international
track and field competitions?
Bannister, a British physician, broke
the four-minute mile in 1954.
Will someone break the three-minute
Is there a limit
to the amount of time required to run a mile? If so, when
do you think it will be reached?
Why are speeds on the 100-meter
or 200-meter dashes reported in meters/second
instead of kilometers per hour?
During World War II, American soldiers referred
to kilometers as kiddie miles.
Where do you think this name came from?
such as the cheetah, lion, and hyena, run
faster than most other animals. Why?