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Chemistry, 06.05.2021 17:30 deepunalli300p3ur3i

Mary is standing on a train moving east at 10 km per hour. Alicia is sitting on a train that passes in the opposite direction at 30 km per hour. From Mary's point of view, how fast is Alicia moving? Help

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Mary is standing on a train moving east at 10 km per hour. Alicia is sitting on a train that passes...

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