Re: To Slap the Ground or Not
just so you guys know, F=ma is for one direction only and does not take into account rotation. so if you're doing a forward roll, that formula is null and void. and since we're trained to slap the mat in two directions (horizontal and vertical component), that formula is voided again.
i still agree that in a breakfall situation, it helps dissipate impact. in a forward roll i'm not so sure, because the roll, by definition, dissipates the impact.