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如图是探究“物体动能的大小与什 么因素有关?”的实验示意图. (1)该实验要探究的是物体动能的大小与物体______ 的关系. (2)该实验中物体的动能是指物体______(选填“A”或“B”)的动能,该动能是由______能转化而来的. (3)该实验中物体的速度是指物体A从斜面上静止滚下与物体B碰撞时______(选填“碰前A”、“碰后A”、“碰前B”或“碰后B”)的速度,它是通过______(选填“高度”或“质量”)来改变的. (4)若在实验中,由于木板较短,物体B碰后滑出木板,在不改变原有器材的情况下,如何保证碰后物体B能始终在木板上滑行?方法是______. (5)若水平面绝对光滑,本实验______(选填“能”或“不能”)达到探究目的.
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