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Physics 23 Online
OpenStudy (lexy148):

Acceleration/speed problem: A marathon runner covers 26 miles of ground in 248 minutes.What is the runners average speed in miles/hour?

OpenStudy (anonymous):

Convert minutes into hours. 248 minutes * (1/60 hour / 1 minute) = 4.13 hours Divide the distance by the time duration. 26 miles / 4.13 hours = 6.3 miles / hour

OpenStudy (lexy148):

how did you get 60 hours

OpenStudy (lexy148):

@Pompeii00

OpenStudy (anonymous):

It's (1/60) hours What that statement is saying, is that 1 minute is equal to (1/60) of an hour. It allows you to convert units. This is known as "dimensional analysis".

OpenStudy (lexy148):

oh okay thx

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