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A 70-kg student climb stair as shown, y = 12 m and it is completed in 6.0 s. For the second time, the same task

A 70-kg student climb stair as shown, y = 12 m and it is completed in 6.0 s. For the second time, the same task is completed in 8.0 s. Match the answers with questions C. output energy B. output power A. increases B. decreases C. stays the same D. not enough information

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