Ajouter "Isaac Newton will help you swim faster. Physics of swimming part 2"

On this video we will focus on another force that acts while you are actually swimming. Part 1 https://www.youtube.com/watch?v=kOb6UhmlK3U Friction is what makes us move and also what slows us down in the water. To understand this you need to understand the three laws of Newton. I’ll put it on my own simple terms since we don’t have of time and if you want a more scientific approach I’ll leave links in the description for you. The third law states that when you push the water, the water pushes back in the opposite direction. So when you push the water back with your feet and with your hands the water pushes you forward, this is called propulsive drag. The first law states that a swimmer in motion will stay in motion unless stopped by another force. As you know, you don’t keep accelerating, which means that another force is stopping you, a force thAt in swimming terms we can call frontal drag. The second law states that your speed is a constant battle between these two forces. To go faster you can either increase propulsive drag or reduce frontal drag. On this channel we mostly give you advice on reducing frontal drag by perfecting your technique on every stroke, which in our opinion is the best way. You can also do other things like shave your body and wear a fast suit, also good but not as significant. However, you can also increase propulsive drag by changing the position of your hands, which are very important sources of propulsion or by kicking with very flexible ankles which will change the direction of your push and help you go faster. Another option is to move your arms and feet faster, assuming you keep the same technique. On this study: by co-author Josje van Houwelingen, a swimming fluid dynamicist at the Eindhoven University of Technology in the Netherlands. it says that the optimal pull is with around a 10 degree finger separation. But I will have to leave the explanation of that for a later video. If you don’t want to miss it make sure to subscribe and have the bell icon checked. If you want more swimming content like our tutorials in a written format or you want an original swim cap check out our webpage. Sources: Biomechanics of Competitive Swimming Strokes https://www.intechopen.com/chapters/19665 Newton”s laws of swimming http://ffden-2.phys.uaf.edu/211_fall2013.web.dir/Claressa_Ullmayer/Newton%27s%20Laws.html Newton’s laws of motion https://en.wikipedia.org/wiki/Newton%27s_laws_of_motion Fingers: https://www.livescience.com/56998-fastest-freestyle-swimming-finger-spread-science.html Skills N Talents Links: Skills NT Shop: https://skillswimming.com/swimming-shop/ Subscribe to our email list: https://skillswimming.com/subscribe/ Our favorite Amazon products: https://www.amazon.com/shop/skillsnt Become our Patreon: https://www.patreon.com/user?u=4140610 Instragram: https://www.facebook.com/unsupportedbrowser Facebook: https://www.facebook.com/unsupportedbrowser Thanks for watching! Swim fast!