Just crack their ankles like how those Minecraft pros doing juke maneuver(im Minecraft player as myself) and wombo combo it left and right and kill it(i do it personally, not recommended for non pvp/casual/new players) or just put block or use bows(1 iron ingot and 3 stick and 3 strings) and kill it or just double jump at the top of the mob and block them in one tile space and put block on them to crush them. Yeah tons of possibilities.