[填空题]
A wooden block is cut into two pieces, one with thknm,xgkyx1; 8 bm -ty/ree times the mass of the othe8m-/tybxm;1kxgnyk, a w.:gh sw-ph)r. A depression is made 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 distah .s)-ahpwgw :nces each block travels?