All pool players know how hard it is to make the 8 ball on the break while playing straight pool. Unless you get a lucky kick, the 8 ball will stay in the center of the table. The break described below will give you the best chance of making the 8 ball.
The video below will show how the cue ball should strike the second ball of the rack, not the first. While you are watching, notice several aspects of this shot; the cue ball going into the side rail after striking the rack and coming back into the center of the table, the 8 ball being knocked down table and hit once by another ball, the power of the shot.
There is no way to make the 8 ball every time on the break, however, using this break will increase your chances as the 8 ball is usually knocked down table by other balls in the rack or hit by the cue ball when it comes off of the rail.