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来源:百度文库 编辑:杭州交通信息网 时间:2024/04/29 19:06:22
What is the change of velocity in m/s when +6.0 m/s becomes + 15 m/s ?

这个问题是甚麼意思呀??

What is the change of velocity in m/s when +6.0 m/s becomes + 15 m/s ?
从6m/s到15m/s, 速度以米/秒(为单位)变化了多少?

速度从6m/s到15m/s变化了多少?