Asked by Anonymous

The winner of the Kentucky Derby runs the 1.25-mile race in 2 minutes, 2.0 s.What's the horse's average speed in {\rm m}/{\rm s}?
Answered by Henry
t = 2 min * 60s/min + 2s = 122 sec.
d = 1.25miles * 5280ft/mile = 6600 feet
d = 6600ft * 3.3m/ft = 21780 meters

V = 6600ft / 122s = 54.1ft/s
V = 21780m / 122s = 178.5 m/s.

Answered by Henry
V = 1.25 miles / 122s * 3600 s/hr =
36.9 miles/hr.
Answered by drwls
Henry's meter per secnd answer is incorrect.

There are not 3.3 meters per foot. There are 0.3048
Answered by Henry
drwls is correct!
I meant to write:
6600ft *(1/3.3)m/ft = 6600 / 3.3 = 2000m

V = 2000m / 122s = 16.39m/s


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