Physics, 18.11.2020 03:40 tomuchsaucecj

What is the average speed of a train that covers 80 km in 1 hour, 200 km in 2 hours, and 500 km in 4 hours?

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What is the average speed of a train that covers 80 km in 1 hour, 200 km in 2 hours, and 500 km in 4...

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