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A runner covers 55 yards in 5.5 seconds. Find the runner's average speed in miles per hour.

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asked Apr 25, 2015 202k views

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A runner covers 55 yards in 5.5 seconds. Find the runner's average speed in miles per hour.

Mathematics
middle-school

Jim Tough asked

by Jim Tough

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$V=(s)/(t),where\ V-speed,\ s-distence\ ,t-time\\\\V=(55y)/(5,5s)=10(y)/(s)=10(0,000568m)/((1)/(3600)h)=(0,00568m)/((1)/(3600)h)=0,00568\cdot3600(m)/(h)=\\\\=20,448(m)/(h)$

Nick Ludlam answered Apr 29, 2015

by Nick Ludlam

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A runner covers 55 yards in 5.5 seconds. Find the runner's average speed in miles per hour.

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