物体质量为2kg,静止于水平面上,它与水平面间的动摩擦因数为0.5,用大小为20N,方向与水平方向成37?衫锾澹锾逶硕?秒后撤去F,物体最后停下,求 1.前4秒运动的加速度是多少 2.撤
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![物体质量为2kg,静止于水平面上,它与水平面间的动摩擦因数为0.5,用大小为20N,方向与水平方向成37?衫锾澹锾逶硕?秒后撤去F,物体最后停下,求 1.前4秒运动的加速度是多少 2.撤](/uploads/image/z/2386822-22-2.jpg?t=%E7%89%A9%E4%BD%93%E8%B4%A8%E9%87%8F%E4%B8%BA2kg%2C%E9%9D%99%E6%AD%A2%E4%BA%8E%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%2C%E5%AE%83%E4%B8%8E%E6%B0%B4%E5%B9%B3%E9%9D%A2%E9%97%B4%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0%E4%B8%BA0.5%2C%E7%94%A8%E5%A4%A7%E5%B0%8F%E4%B8%BA20N%2C%E6%96%B9%E5%90%91%E4%B8%8E%E6%B0%B4%E5%B9%B3%E6%96%B9%E5%90%91%E6%88%9037%3F%E8%A1%AB%26%2357647%3B%26%2357859%3B%E9%94%BE%E6%BE%B9%26%2357577%3B%E9%94%BE%E9%80%B6%E7%A1%95%3F%E7%A7%92%E5%90%8E%E6%92%A4%E5%8E%BBF%2C%E7%89%A9%E4%BD%93%E6%9C%80%E5%90%8E%E5%81%9C%E4%B8%8B%2C%E6%B1%82+1.%E5%89%8D4%E7%A7%92%E8%BF%90%E5%8A%A8%E7%9A%84%E5%8A%A0%E9%80%9F%E5%BA%A6%E6%98%AF%E5%A4%9A%E5%B0%91+2.%E6%92%A4)
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