动能定理的题,某人站在平台上把一个质量为m=200g的石块以V0=12m/s的初速度斜向上抛出,石块脱手是离地面的高度h=2.6m(g取10m/s^2)求:(1)如果空气阻力可以忽略,石块落地时的速度多大?(2)如
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![动能定理的题,某人站在平台上把一个质量为m=200g的石块以V0=12m/s的初速度斜向上抛出,石块脱手是离地面的高度h=2.6m(g取10m/s^2)求:(1)如果空气阻力可以忽略,石块落地时的速度多大?(2)如](/uploads/image/z/6681855-39-5.jpg?t=%E5%8A%A8%E8%83%BD%E5%AE%9A%E7%90%86%E7%9A%84%E9%A2%98%2C%E6%9F%90%E4%BA%BA%E7%AB%99%E5%9C%A8%E5%B9%B3%E5%8F%B0%E4%B8%8A%E6%8A%8A%E4%B8%80%E4%B8%AA%E8%B4%A8%E9%87%8F%E4%B8%BAm%3D200g%E7%9A%84%E7%9F%B3%E5%9D%97%E4%BB%A5V0%3D12m%2Fs%E7%9A%84%E5%88%9D%E9%80%9F%E5%BA%A6%E6%96%9C%E5%90%91%E4%B8%8A%E6%8A%9B%E5%87%BA%2C%E7%9F%B3%E5%9D%97%E8%84%B1%E6%89%8B%E6%98%AF%E7%A6%BB%E5%9C%B0%E9%9D%A2%E7%9A%84%E9%AB%98%E5%BA%A6h%3D2.6m%EF%BC%88g%E5%8F%9610m%2Fs%5E2%EF%BC%89%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E5%A6%82%E6%9E%9C%E7%A9%BA%E6%B0%94%E9%98%BB%E5%8A%9B%E5%8F%AF%E4%BB%A5%E5%BF%BD%E7%95%A5%2C%E7%9F%B3%E5%9D%97%E8%90%BD%E5%9C%B0%E6%97%B6%E7%9A%84%E9%80%9F%E5%BA%A6%E5%A4%9A%E5%A4%A7%3F%282%29%E5%A6%82)
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