tarleton5292 tarleton5292

27-08-2018
Physics

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A train travels 78 kilometers in 2 hours, and then 60 kilometers in 3 hours. What is its average speed?

Respuesta :

29-08-2018

Average speed = (distance covered) / (time to cover the distance)

Distance covered = (78 km + 60 km) = 138 km

Time to cover the distance = (2 hrs + 3 hrs) = 5 hours

Average speed = (138 km) / (5 hours)

Average speed = 27.6 km/hr

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