honornoelle4249 honornoelle4249

06-07-2018
Physics

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A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed

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CaioMaia CaioMaia

06-07-2018

Hi!

Sum of the distances: 53 + 90 = 143 km
Sum of the times: 4 + 3 = 7 hours

The average speed will be:
V = 143/7
V = 20.4 km/h

;)

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