The 100 Metres Trivia Questions

Since 2010, any false start results in immediate disqualification. The old rule allowing one warning was changed to speed up races and reduce gamesmanship.

IAAF rules state any tailwind above 2.0 m/s makes a time ineligible for records. This ensures fairness, as wind can significantly boost speed.

The start is critical for acceleration, but the 100m is typically decided in the later stages, where athletes with better speed endurance and less deceleration pull ahead.

As of 2024, approximately 190 men have officially run the 100 metres in under 10 seconds, surpassing 100 by a wide margin. The feat is no longer rare among elite sprinters.

Florence Griffith-Joyner's women's 100m record is 10.49 seconds. Jim Hines' 1968 men's record is 9.95 seconds. The lower time is faster, so the women's record is slower.

Bolt's reaction time of 0.146 seconds was above the 0.100-second false start threshold, which has not changed. The rule change only made any false start an automatic disqualification, but his start was legal.

While mostly anaerobic, sprinters do use some aerobic energy. The race lasts about 10 seconds, and aerobic contribution is minimal but not zero, especially in the final meters.

The women's 100m world record (10.49) set in 1988 has not been broken since 2000. The men's record has been broken multiple times (Powell in 2005, 2007; Bolt in 2008, 2009).