Wait for the master.

The amount of confidence oozing from this dude

i re-watched it several times, looking for what he does differently. finally i spotted it. look at the line of motion in his strike. it’s not especially fast, he doesn’t wind up more than the others, and it’s not a matter of strength – the guy who knocked over the stand probably put more muscle into it. but there’s a unity of movement he has that the others lack. his body and sword are all one curve. everything moves at once along the same line.

from a physics perspective, that means all the force he’s applying is concentrated at the point of contact between his sword’s edge and the target, and it moves at just the speed that breakage propogates through the material. too slow and it wouldn’t have enough force; too fast and he’d get ahead of the break, shoving the target over instead of cutting it.

from a writing perspective, that means that i should focus on describing a master swordsman’s smoothness more than their strength or speed, and can also have witnesses be confused at the effectiveness of strikes that don’t actually seem all that fast.