english: When David rolls it around like this, he's turning the sling around probably at six or seven revolutions per second, and that means that when the rock is released, it's going forward really fast, probably 35 meters per second.
non_english: Ko jo David takole zavrti, to počne verjetno s šestimi ali sedmimi vrtljaji na sekundo. To pomeni, da ko se kamen sproži, potuje izjemno hitro, kakih 35 metrov na sekundo.