两物体做竖直上抛运动，上升高度之比为h1：h2=16：25，它们抛出时初速度之比υ10：υ20=_________ ． -湖北继续教育网网校

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两物体做竖直上抛运动，上升高度之比为h1：h2=16：25，它们抛出时初速度之比υ10：υ20=_________ ．

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