11.16-10/ 一个人把质量为m的物体由静止举高h,并使物体获得速度为v,下列说法中正确的是()?(A)合外力做功为 (1/2)*m*v^2(B) 合外力做功为 (1/2)*m*v^2+mgh(C) 人对物体做功为(1/2)*m*v^2(D) 人对物体做功
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![11.16-10/ 一个人把质量为m的物体由静止举高h,并使物体获得速度为v,下列说法中正确的是()?(A)合外力做功为 (1/2)*m*v^2(B) 合外力做功为 (1/2)*m*v^2+mgh(C) 人对物体做功为(1/2)*m*v^2(D) 人对物体做功](/uploads/image/z/10095754-58-4.jpg?t=11.16-10%2F+%E4%B8%80%E4%B8%AA%E4%BA%BA%E6%8A%8A%E8%B4%A8%E9%87%8F%E4%B8%BAm%E7%9A%84%E7%89%A9%E4%BD%93%E7%94%B1%E9%9D%99%E6%AD%A2%E4%B8%BE%E9%AB%98h%2C%E5%B9%B6%E4%BD%BF%E7%89%A9%E4%BD%93%E8%8E%B7%E5%BE%97%E9%80%9F%E5%BA%A6%E4%B8%BAv%2C%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E4%B8%AD%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%EF%BC%88%EF%BC%89%3F%28A%29%E5%90%88%E5%A4%96%E5%8A%9B%E5%81%9A%E5%8A%9F%E4%B8%BA+%281%2F2%29%2Am%2Av%5E2%28B%29+%E5%90%88%E5%A4%96%E5%8A%9B%E5%81%9A%E5%8A%9F%E4%B8%BA+%281%2F2%29%2Am%2Av%5E2%2Bmgh%28C%29+%E4%BA%BA%E5%AF%B9%E7%89%A9%E4%BD%93%E5%81%9A%E5%8A%9F%E4%B8%BA%281%2F2%29%2Am%2Av%5E2%28D%29+%E4%BA%BA%E5%AF%B9%E7%89%A9%E4%BD%93%E5%81%9A%E5%8A%9F)
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