如图是探究“物体的动能的大小与速度有关”的实验示意图.(1)该实

如图是探究“物体的动能的大小与速度有关”的实验示意图.

(1)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.                 

(2)该实验中物体动能的大小是通过     _    来反映的

(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)为了研究动能与质量的关系,必须将质量不同的物体A从斜面的           高度下落,目的是为了控制              相同。

(5)若水平面绝对光滑,本实验___          _(选填“能”或“不能”)达到探究目的,原因是:                                         

答案

1A、重力势      2B移动距离(或s的大小)

3)碰前A、高度       4)同一、物体A到达水平面时速度相同

5)不能、B将一直运动下去

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