Physics, 14.09.2019 10:20 jontae81

Arunner ran v1 km/hr for the first half of the race. the runner then ran v2 km/h for the second half of the race. what was the average speed of this runner? it is okay for the answer to be in variables.

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Arunner ran v1 km/hr for the first half of the race. the runner then ran v2 km/h for the second half...

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