In 2004 olympics, shawn crawford ran 200m in 19.79 sec .justin gatlin ran the 100 m race in 9.85 seconds. a) calculate their speeds (round to two decimal places) b) whose speed was faster and by how much

Shawn:

200/19.79 = 10.11m per second

Justin:

100/9.85 = 10.15m per second

10.15-10.11 = 0.04 speed differance

Shawn was faster than Justin by 0.04m per second

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show the wavelengths of a wave. show the crests of a wave.