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Question 2:
The qualifying runner travels 100m in 11.32 seconds. Speed is distance/time so 100/11.32 is 8.8339 metres per second. The qualifying runner travels at 8.8339 metres per second. Shelley-Ann Fraser runs 100m in 10.783 seconds. Speed is distance/time so 100/10.78 is 9.276 metres per second. 9.276 x 11.32 (the qualifiers time) is 105.004 metres, so Shelly could run 105.004 metres in the time the qualifier takes to run 100 metres.