[填空题]
A wooden block is cut into two piecesfm0k0f h -);wpugpet/, one with three ddkb rbpvt 2-yt ;4.y(times the mass of the other. A depression is made in both faces of the cut, so that a firecracker can be placed in it with the block reassembled. The reassembler;bbd -2tp.yy 4(k vdtd 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?
