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Home Q & A Board Science-Related Homework Help Mathematics
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cloveb cloveb
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Posts: 782
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7 years ago
A car travels at a constant speed around a circular track with circumference equal to
2 miles. If the car records a time of 15 minutes for 9 laps, what is the linear speed of the
car in miles per hour?
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wrote...
#1
7 years ago
Let the distance travelled around a circular track=S
S= (9 laps) x (2 mi/lap) = 18 mi
V=S/t;
Where V is the linear speed of the car in mi/hr
S is the car travelled distance
t is the time in hours

t = 15 minutes x (1 hour/60 minutes) =0.25 hr
V= 18 mi/0.25 hr=72 mph
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