[填空题]
A wooden block is cut into two pieces, one with three t fxqe4.boeuxt 4*4bf.ck 034.maisvyideb2 7 pzg m41imes the mass of the other. A depression is mad ed7sy.1z cigiabmkv42 0 4mp3e in both faces of the cut, so that a firecracker can be placed in it with the block reassembled. The reassembled block is set on a rough-surfaced table, and the fuse is lit. When the firecracker explodes, the two blocks separate and slide apart. What is the ratio of distances each block travels?
