Question #978b1

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Answer 1 · 2016-01-26T01:34:30

80 m/s = 179 mph

1 mile = 1609.34 m
1 hour = 3600 s

$(1 "mile")/("hr")=(1609.34 m)/(3600 s)=0.447m/s$

so

$1 m/s = 1/0.447mph = 2.237 mph$

so now we just need to find for 80 m/s:

$80 m/s = 80* 2.237 mph$

$80 m/s = 179 mph$

It's a lot tidier in in metric :-)