53. Three-quarters of the way the vehicle was at a spee

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Uploaded: 24.11.2015
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53. Three-quarters of the way the vehicle was at a speed υ1 = 60 km / h, the rest of the way - with the speed υ2 = 80 km / h. What is the average ground speed <υ> Car?

Additional information

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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