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Answer to Question #34506 in Molecular Physics | Thermodynamics for Laura

Question #34506

Sally travels by car from one city to another. She drives for 28.0 min at 79.0 km/h, 49.0 min at 31.0 km/h, and 49.0 min at 70.0 km/h, and she spends 10.0 min eating lunch and buying gas.
Determine the average speed for the trip.
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