高为x的升降机以速度v匀速下降,一物体由升降机顶部自由下落,它从落下到碰到升降机底部所需时间为t1,升降机静止时物体由顶部自由下落到升降机底部所需时间为t2 则t1=t2为什么?
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![高为x的升降机以速度v匀速下降,一物体由升降机顶部自由下落,它从落下到碰到升降机底部所需时间为t1,升降机静止时物体由顶部自由下落到升降机底部所需时间为t2 则t1=t2为什么?](/uploads/image/z/10009054-46-4.jpg?t=%E9%AB%98%E4%B8%BAx%E7%9A%84%E5%8D%87%E9%99%8D%E6%9C%BA%E4%BB%A5%E9%80%9F%E5%BA%A6v%E5%8C%80%E9%80%9F%E4%B8%8B%E9%99%8D%2C%E4%B8%80%E7%89%A9%E4%BD%93%E7%94%B1%E5%8D%87%E9%99%8D%E6%9C%BA%E9%A1%B6%E9%83%A8%E8%87%AA%E7%94%B1%E4%B8%8B%E8%90%BD%2C%E5%AE%83%E4%BB%8E%E8%90%BD%E4%B8%8B%E5%88%B0%E7%A2%B0%E5%88%B0%E5%8D%87%E9%99%8D%E6%9C%BA%E5%BA%95%E9%83%A8%E6%89%80%E9%9C%80%E6%97%B6%E9%97%B4%E4%B8%BAt1%2C%E5%8D%87%E9%99%8D%E6%9C%BA%E9%9D%99%E6%AD%A2%E6%97%B6%E7%89%A9%E4%BD%93%E7%94%B1%E9%A1%B6%E9%83%A8%E8%87%AA%E7%94%B1%E4%B8%8B%E8%90%BD%E5%88%B0%E5%8D%87%E9%99%8D%E6%9C%BA%E5%BA%95%E9%83%A8%E6%89%80%E9%9C%80%E6%97%B6%E9%97%B4%E4%B8%BAt2+%E5%88%99t1%3Dt2%E4%B8%BA%E4%BB%80%E4%B9%88%3F)
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