clairostan t1_jef46xz wrote on March 31, 2023 at 3:38 PM

Reply to comment by Any_Branch_4379 in ELI5: why can’t someone who is light in weight punch as hard as someone who is heavier? by Any_Branch_4379

they're not able to do them by second nature. they've had to throw the same punches thousands of times since they were little kids to develop the technique they have. it's their job to be able to punch well. practice makes them good.

what you're talking about when you say whipping the punch to make it harder is basically just saying throwing it faster to make it hit harder, which is true. force = mass x acceleration and velocity is a component of acceleration. if you throw the punch with higher velocity, you're making one of the numbers you have to multiply to get your force output bigger, which makes the force itself bigger.

Senrabekim t1_jefb50z wrote on March 31, 2023 at 4:22 PM

This is a good start to thinking about fight physics, another thing from physics that you have to think about while training are Newton's laws of motion. The third comes up a lot for a strike.

If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

So I need my body to be a wall at the moment of impact, any give in me is less force that they have to take. So if I throw a hook, and do it with just my arm, and my feet arent set, my core and ass arent fully engaged and/or my legs are wobbly, then Im going to move and that will lessen the impact on my opponent.