28.如图,正方形ABCD的边长为5cm,动点P从点C出发,沿折线C-B-A-D向终点D运动,28.如图,正方形ABCD的边长为5cm,动点P从点C出发,沿折线C-B-A-D向终点D运动,速度为acm/s;动点Q从点B出发,沿对角线BD向
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![28.如图,正方形ABCD的边长为5cm,动点P从点C出发,沿折线C-B-A-D向终点D运动,28.如图,正方形ABCD的边长为5cm,动点P从点C出发,沿折线C-B-A-D向终点D运动,速度为acm/s;动点Q从点B出发,沿对角线BD向](/uploads/image/z/2122581-21-1.jpg?t=28.%E5%A6%82%E5%9B%BE%2C%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA5cm%2C%E5%8A%A8%E7%82%B9P%E4%BB%8E%E7%82%B9C%E5%87%BA%E5%8F%91%2C%E6%B2%BF%E6%8A%98%E7%BA%BFC-B-A-D%E5%90%91%E7%BB%88%E7%82%B9D%E8%BF%90%E5%8A%A8%2C28%EF%BC%8E%E5%A6%82%E5%9B%BE%2C%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA5cm%2C%E5%8A%A8%E7%82%B9P%E4%BB%8E%E7%82%B9C%E5%87%BA%E5%8F%91%2C%E6%B2%BF%E6%8A%98%E7%BA%BFC%EF%BC%8DB%EF%BC%8DA%EF%BC%8DD%E5%90%91%E7%BB%88%E7%82%B9D%E8%BF%90%E5%8A%A8%2C%E9%80%9F%E5%BA%A6%E4%B8%BAacm%2Fs%EF%BC%9B%E5%8A%A8%E7%82%B9Q%E4%BB%8E%E7%82%B9B%E5%87%BA%E5%8F%91%2C%E6%B2%BF%E5%AF%B9%E8%A7%92%E7%BA%BFBD%E5%90%91)
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