This is why math and physics is important kids.
“So what is our conclusion? Mainly that it seems very unlikely that – as real, non-magical but monstrous creatures – trolls could actually function as they are shown. The weapons they are shown using are so heavy that they aren’t even on the right order of magnitude even when we assume a troll essentially has the strength of ten men. Moreover, even with such tremendous strength, it’s unlikely that trolls are going to be able to produce and impart the sort of energy necessary to – for instance – toss armored men high into the air with each hit. Casually smashing their way through a battle-line by tossing multiple men out of the way with their hammers isn’t something trolls can do without magic.“
Alright” I hear you say, “but you’re supposed to be a historian, not a physicist. Who cares?” I think this exercise is valuable because trolls – for all their limits – represent a fantastical extreme in size and power. If trolls can’t do it, no human, horse or camel can. And that is my point.”
https://acoup.blog/2019/06/07/collections-the-siege-of-gondor-part-v-just-flailing-about-flails/