必修2物理的一道动能定理问题质量为m=0.5kg小球位于H=5m高处,以v0=20m/s竖直向上抛出,若小球运动中所受介质阻力恒为 f=0.2mg,且小球每次与地面相撞均无机械能损失,求小球经过的路程(g=10m/s2)
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![必修2物理的一道动能定理问题质量为m=0.5kg小球位于H=5m高处,以v0=20m/s竖直向上抛出,若小球运动中所受介质阻力恒为 f=0.2mg,且小球每次与地面相撞均无机械能损失,求小球经过的路程(g=10m/s2)](/uploads/image/z/3825942-6-2.jpg?t=%E5%BF%85%E4%BF%AE2%E7%89%A9%E7%90%86%E7%9A%84%E4%B8%80%E9%81%93%E5%8A%A8%E8%83%BD%E5%AE%9A%E7%90%86%E9%97%AE%E9%A2%98%E8%B4%A8%E9%87%8F%E4%B8%BAm%3D0.5kg%E5%B0%8F%E7%90%83%E4%BD%8D%E4%BA%8EH%3D5m%E9%AB%98%E5%A4%84%2C%E4%BB%A5v0%3D20m%EF%BC%8Fs%E7%AB%96%E7%9B%B4%E5%90%91%E4%B8%8A%E6%8A%9B%E5%87%BA%2C%E8%8B%A5%E5%B0%8F%E7%90%83%E8%BF%90%E5%8A%A8%E4%B8%AD%E6%89%80%E5%8F%97%E4%BB%8B%E8%B4%A8%E9%98%BB%E5%8A%9B%E6%81%92%E4%B8%BA+f%EF%BC%9D0.2mg%2C%E4%B8%94%E5%B0%8F%E7%90%83%E6%AF%8F%E6%AC%A1%E4%B8%8E%E5%9C%B0%E9%9D%A2%E7%9B%B8%E6%92%9E%E5%9D%87%E6%97%A0%E6%9C%BA%E6%A2%B0%E8%83%BD%E6%8D%9F%E5%A4%B1%2C%E6%B1%82%E5%B0%8F%E7%90%83%E7%BB%8F%E8%BF%87%E7%9A%84%E8%B7%AF%E7%A8%8B%28g%3D10m%2Fs2%29)
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