第一道一物体由A点到B点做直线运动,已知时间为t,A点瞬时速度为Va.B点瞬时速度为Vb,求V(t/2),也就是求中间速度.第二道一物体经过ABCDE点做直线运动,AB=x1,BC=x2,CD=x3,DE=x4,已知每段时间都相等,老师
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![第一道一物体由A点到B点做直线运动,已知时间为t,A点瞬时速度为Va.B点瞬时速度为Vb,求V(t/2),也就是求中间速度.第二道一物体经过ABCDE点做直线运动,AB=x1,BC=x2,CD=x3,DE=x4,已知每段时间都相等,老师](/uploads/image/z/2365007-23-7.jpg?t=%E7%AC%AC%E4%B8%80%E9%81%93%E4%B8%80%E7%89%A9%E4%BD%93%E7%94%B1A%E7%82%B9%E5%88%B0B%E7%82%B9%E5%81%9A%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E5%B7%B2%E7%9F%A5%E6%97%B6%E9%97%B4%E4%B8%BAt%2CA%E7%82%B9%E7%9E%AC%E6%97%B6%E9%80%9F%E5%BA%A6%E4%B8%BAVa.B%E7%82%B9%E7%9E%AC%E6%97%B6%E9%80%9F%E5%BA%A6%E4%B8%BAVb%2C%E6%B1%82V%28t%2F2%29%2C%E4%B9%9F%E5%B0%B1%E6%98%AF%E6%B1%82%E4%B8%AD%E9%97%B4%E9%80%9F%E5%BA%A6.%E7%AC%AC%E4%BA%8C%E9%81%93%E4%B8%80%E7%89%A9%E4%BD%93%E7%BB%8F%E8%BF%87ABCDE%E7%82%B9%E5%81%9A%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%2CAB%3Dx1%2CBC%3Dx2%2CCD%3Dx3%2CDE%3Dx4%2C%E5%B7%B2%E7%9F%A5%E6%AF%8F%E6%AE%B5%E6%97%B6%E9%97%B4%E9%83%BD%E7%9B%B8%E7%AD%89%2C%E8%80%81%E5%B8%88)
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