f.4 phys,,about a dolphin
2008-10-10 6:40 am
A dolphin at the Ocean Park 'jumps' upwards to reach a ball 4m above the water surface. What is the minimum speed it would have when it just leaves the water surface? Neglect the size of the dolphin.
回答 (1)
2008-10-11 9:30 pm
收錄日期: 2021-04-13 16:08:51
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https://hk.answers.yahoo.com/question/index?qid=20081009000051KK02179