Please have a look以初速度为Vo=10m/s从地面竖直上抛一质量m=0.2kg的物体,不记阻力时,上升几秒后物体的动能和势能相等?其值多大?若物体实际达到的最大高度为h=76m,设物体运动过程中所受阻力大小
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![Please have a look以初速度为Vo=10m/s从地面竖直上抛一质量m=0.2kg的物体,不记阻力时,上升几秒后物体的动能和势能相等?其值多大?若物体实际达到的最大高度为h=76m,设物体运动过程中所受阻力大小](/uploads/image/z/5761293-69-3.jpg?t=Please+have+a+look%E4%BB%A5%E5%88%9D%E9%80%9F%E5%BA%A6%E4%B8%BAVo%3D10m%2Fs%E4%BB%8E%E5%9C%B0%E9%9D%A2%E7%AB%96%E7%9B%B4%E4%B8%8A%E6%8A%9B%E4%B8%80%E8%B4%A8%E9%87%8Fm%3D0.2kg%E7%9A%84%E7%89%A9%E4%BD%93%2C%E4%B8%8D%E8%AE%B0%E9%98%BB%E5%8A%9B%E6%97%B6%2C%E4%B8%8A%E5%8D%87%E5%87%A0%E7%A7%92%E5%90%8E%E7%89%A9%E4%BD%93%E7%9A%84%E5%8A%A8%E8%83%BD%E5%92%8C%E5%8A%BF%E8%83%BD%E7%9B%B8%E7%AD%89%3F%E5%85%B6%E5%80%BC%E5%A4%9A%E5%A4%A7%3F%E8%8B%A5%E7%89%A9%E4%BD%93%E5%AE%9E%E9%99%85%E8%BE%BE%E5%88%B0%E7%9A%84%E6%9C%80%E5%A4%A7%E9%AB%98%E5%BA%A6%E4%B8%BAh%3D76m%2C%E8%AE%BE%E7%89%A9%E4%BD%93%E8%BF%90%E5%8A%A8%E8%BF%87%E7%A8%8B%E4%B8%AD%E6%89%80%E5%8F%97%E9%98%BB%E5%8A%9B%E5%A4%A7%E5%B0%8F)
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