# The Fastest Racehorse

Image source: Kentuckyderby.com

The Kentucky Derby is the most important horse race in America, and is also known for the amazing hats people wear for the race. The race itself is $2~\mbox{km}$ long and the winning horse this year was Orb in a time of $2~\mbox{minutes}$, $2.89~\mbox{seconds}$. What was Orb's average speed in m/s?

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