When Object 1 came into contact with Object 2, Object 2 got warmer. What can be concluded about the objects before they came into contact with each other?

Thermal energy flows from the warmer object to the cooler one. Since Object 2 got warmer after contact, Object 1 must have been at a higher temperature before they touched. Its particles were therefore moving faster on average, so the best conclusion is that Object 1 had faster-moving particles.

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