jocelyn2655 jocelyn2655

14-10-2017
Physics

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A motorist drives 200 km from one city to another in 2.50 h but makes the return trip in only 1.60 h. what is the average speed for the total trip?

Respuesta :

14-10-2017

Average speed = (total distance) divided by (total time).

Total distance = 400 km
Total time = (2.5 + 1.6) = 4.1 hr

Average speed = 400/4.1 = 97.56 km/hr

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