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Physics, 20.09.2019 21:10 angelina0miles

Amotorcyclist drove 7 km at 57km/h and then another 7 km at 81 km/h. what was the average speed?

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Amotorcyclist drove 7 km at 57km/h and then another 7 km at 81 km/h. what was the average speed?...

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