[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"api:\u002Fcourses\u002Flectors\u002Fpetr-dvorak:{}":3},{"lector":4,"courses":11,"notifications":393},{"id":5,"name":6,"surname":7,"biography":8,"web":9,"slug":10},7,"Petr","Dvořák","> Lektor fyziky\n\nPřednáší základní kurz vysokoškolské fyziky (mechanika, elektromagnetismus), je popularizátorem vědy (NaturTech, Generace Y, Noc vědců,...). Petr Dvořák vystudoval obor Fyzikální inženýrství a nanotechnologie na Fakultě strojního inženýrství VUT v Brně, kde nyní dokončuje doktorské studium a plánuje věnovat se akademické kariéře. Na této fakultě také přednáší základní kurzy vysokoškolské fyziky (mechanika a elelktromagnetismus) a věnuje se aktivně vědeckému bádaní v oblasti optických vlastností nanostruktur, tzv. plazmonika. Vedle této aktivity se věnuje popularizaci vědy na středních školách a pro laickou veřejnost. Jeho záliby jsou astronomie a windsurfing, kde využívá teoretické fyzikální poznatky v praktickém životě.","","petr-dvorak",[12],{"id":13,"name":14,"slug":15,"previewImage":16,"description":20,"description_mini":21,"price":22,"priceVariants":23,"structure":43,"type":361,"introductionVideo":362,"packageCourses":369,"coursePackages":370,"relatedCourses":371,"authors":372,"categories":374,"url":384,"isFree":385,"counts":386,"variant_title":46,"variant_description":46,"variants":391,"status":48,"date_published":392},26,"Fyzika - Mechanika I","fyzika-mechanika-i",{"id":17,"width":18,"height":19},"d72208f9-afaa-4800-b78d-a21c749c602b",1000,670,"Kurz fyziky pro **vysokoškoláky a nadané středoškoláky.**  \n  \nPetr Dvořák s Vámi projde základy mechaniky.  \n  \nZačne u **KINEMATIKY**, která popisuje pohyb. Podíváte se na základní popis pohybu v různých souřadných soustavách. Ukážete si rozdíl mezi průměrnou a okamžitou rychlostí i mezi průměrným a okamžitým zrychlením. Odvodíte si rovnice pro pohyb v gravitačním poli a podíváte se na pohyb po kružnici.  \n  \nDalší kapitolou kurzu je **DYNAMIKA**. Zatímco kinematika, říká jak se věci pohybují, dynamika říká proč se tak děje. Zabývá se tedy hlavně silami. Gravitační pole, nakloněná rovina, síly působící na těleso při pohybu po kružici, třecí síla... To jsou jednotlivá témata, která Petr v této kapitole probere. A ukáže Vám i jak je to s tou proradnou odstředivou silou :-)  \n  \n**PRÁCE** je ve fyzice velmi důležitá a má úzkou spojitost s energií. Však mají také obě veličiny stejnou jednotku - Joul. V kapitole o práci vám Petr ukáže, jaké práce se konají při různých dějích. Například jakou práci koná gravitační síla, nebo jakou práci musíte vykonat, abyste stlačili pružinu.  \n  \nNěkteré úlohy jsou příliš složité, aby se řešily pomocí silových účinků. Mnohem jednodužší je využít **ENERGIE**. Energie systému je stavová veličina a umožní nám spočítat velmi složité příklady. Řeč bude hlavně o mechanické energii. Tedy o kinetické, potenciální a pružné energii a dále o ZÁKONU ZACHOVÁNÍ MECHANICKÉ ENERGIE.  \n  \nU procesů, u kterých neplatí zákon zachování mechanické energie (například tam, kde se mechanická energie mění na tepelnou nebo deformační) je potřeba použít veličinu a zákon, který platí vždy. A tím je **HYBNOST** a ZÁKON ZACHOVÁNÍ HYBNOSTI. Hybnost je jediná cesta k cíli, pokud řešíme například nepružné srážky, balistické kyvadlo nebo princip raketového motoru.","Kurz vysokoškolské FYZIKY: Kinematika (dráha, rychlost, zrychlení), dynamika (síly), práce, energie a hybnost.",390,[24,30,36],{"id":25,"sort_order":26,"course_id":13,"licence_length":27,"licence_length_label":28,"price_ratio":29,"price":22},62,0,365,"1 rok",1,{"id":31,"sort_order":29,"course_id":13,"licence_length":32,"licence_length_label":33,"price_ratio":34,"price":35},63,730,"2 roky",1.26,490,{"id":37,"sort_order":38,"course_id":13,"licence_length":39,"licence_length_label":40,"price_ratio":41,"price":42},206,10,-1,"navždy",2,780,[44,149,204,250,296],{"id":45,"free":46,"name":47,"slug":46,"status":48,"type":49,"counts":50,"children":51,"datetimeDone":46,"userFiles":148,"userRecord":46,"metadata":46,"accessibleFrom":46,"earliestAccessibleFrom":46},3658,null,"Kinematika","public","group",{"duration":26,"testsQuestions":26},[52,61,70,80,90,100,110,119,129,139],{"id":53,"free":26,"name":54,"slug":55,"status":48,"type":49,"counts":56,"children":58,"url":59,"lectionOrder":29,"datetimeDone":46,"userFiles":60,"userRecord":46,"metadata":46},801,"Kartézský souřadný systém","kartezsky-souradny-system",{"duration":57,"testsQuestions":26},189,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F801",[],{"id":62,"free":29,"name":63,"slug":64,"status":48,"type":49,"counts":65,"children":67,"url":68,"lectionOrder":41,"datetimeDone":46,"userFiles":69,"userRecord":46,"metadata":46},802,"Polární souřadný systém","polarni-souradny-system",{"duration":66,"testsQuestions":26},184,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F802",[],{"id":71,"free":26,"name":72,"slug":73,"status":48,"type":49,"counts":74,"children":76,"url":77,"lectionOrder":78,"datetimeDone":46,"userFiles":79,"userRecord":46,"metadata":46},803,"Polohový vektor","polohovy-vektor",{"duration":75,"testsQuestions":26},306,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F803",3,[],{"id":81,"free":26,"name":82,"slug":83,"status":48,"type":49,"counts":84,"children":86,"url":87,"lectionOrder":88,"datetimeDone":46,"userFiles":89,"userRecord":46,"metadata":46},804,"Průměrná a okamžitá rychlost","prumerna-a-okamzita-rychlost",{"duration":85,"testsQuestions":26},420,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F804",4,[],{"id":91,"free":26,"name":92,"slug":93,"status":48,"type":49,"counts":94,"children":96,"url":97,"lectionOrder":98,"datetimeDone":46,"userFiles":99,"userRecord":46,"metadata":46},805,"Průměrné a okamžité zrychlení","prumerne-a-okamzite-zrychleni",{"duration":95,"testsQuestions":26},247,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F805",5,[],{"id":101,"free":26,"name":102,"slug":103,"status":48,"type":49,"counts":104,"children":106,"url":107,"lectionOrder":108,"datetimeDone":46,"userFiles":109,"userRecord":46,"metadata":46},806,"Příklad na okamžitou rychlost a okamžité zrychlení","priklad-na-okamzitou-rychlost-a-okamzite-zrychleni",{"duration":105,"testsQuestions":26},179,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F806",6,[],{"id":111,"free":26,"name":112,"slug":113,"status":48,"type":49,"counts":114,"children":116,"url":117,"lectionOrder":5,"datetimeDone":46,"userFiles":118,"userRecord":46,"metadata":46},811,"Pohyb v gravitačním poli","pohyb-v-gravitacnim-poli",{"duration":115,"testsQuestions":26},1066,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F811",[],{"id":120,"free":26,"name":121,"slug":122,"status":48,"type":49,"counts":123,"children":125,"url":126,"lectionOrder":127,"datetimeDone":46,"userFiles":128,"userRecord":46,"metadata":46},812,"Pohyb po kružnici","pohyb-po-kruznici",{"duration":124,"testsQuestions":26},784,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F812",8,[],{"id":130,"free":29,"name":131,"slug":132,"status":48,"type":49,"counts":133,"children":135,"url":136,"lectionOrder":137,"datetimeDone":46,"userFiles":138,"userRecord":46,"metadata":46},808,"Příklad na pohyb po kružnici","priklad-na-pohyb-po-kruznici",{"duration":134,"testsQuestions":26},366,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F808",9,[],{"id":140,"free":26,"name":141,"slug":142,"status":48,"type":49,"counts":143,"children":145,"url":146,"lectionOrder":38,"datetimeDone":46,"userFiles":147,"userRecord":46,"metadata":46},809,"Shrnutí kinematiky","shrnuti-kinematiky",{"duration":144,"testsQuestions":26},109,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F809",[],[],{"id":150,"free":46,"name":151,"slug":46,"status":48,"type":49,"counts":152,"children":153,"datetimeDone":46,"userFiles":203,"userRecord":46,"metadata":46,"accessibleFrom":46,"earliestAccessibleFrom":46},3669,"Dynamika",{"duration":26,"testsQuestions":26},[154,164,174,183,193],{"id":155,"free":29,"name":156,"slug":157,"status":48,"type":49,"counts":158,"children":160,"url":161,"lectionOrder":162,"datetimeDone":46,"userFiles":163,"userRecord":46,"metadata":46},810,"Dynamika - Newtonův pohybový zákon","dynamika-newtonuv-pohybovy-zakon",{"duration":159,"testsQuestions":26},273,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F810",11,[],{"id":165,"free":26,"name":166,"slug":167,"status":48,"type":49,"counts":168,"children":170,"url":171,"lectionOrder":172,"datetimeDone":46,"userFiles":173,"userRecord":46,"metadata":46},813,"Příklad na použití Newtonova pohybového zákona","priklad-na-pouziti-newtonova-pohyboveho-zakona",{"duration":169,"testsQuestions":26},1100,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F813",12,[],{"id":175,"free":26,"name":176,"slug":177,"status":48,"type":49,"counts":178,"children":179,"url":180,"lectionOrder":181,"datetimeDone":46,"userFiles":182,"userRecord":46,"metadata":46},814,"Třecí síla, příklad - nakloněná rovina a třecí síla","treci-sila-priklad-naklonena-rovina-a-treci-sila",{"duration":155,"testsQuestions":26},[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F814",13,[],{"id":184,"free":26,"name":185,"slug":186,"status":48,"type":49,"counts":187,"children":189,"url":190,"lectionOrder":191,"datetimeDone":46,"userFiles":192,"userRecord":46,"metadata":46},815,"Příklad na pohyb po kružnici a dostředivou sílu","priklad-na-pohyb-po-kruznici-a-dostredivou-silu",{"duration":188,"testsQuestions":26},681,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F815",14,[],{"id":194,"free":26,"name":195,"slug":196,"status":48,"type":49,"counts":197,"children":199,"url":200,"lectionOrder":201,"datetimeDone":46,"userFiles":202,"userRecord":46,"metadata":46},816,"Shrnutí dynamiky","shrnuti-dynamiky",{"duration":198,"testsQuestions":26},144,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F816",15,[],[],{"id":205,"free":46,"name":206,"slug":46,"status":48,"type":49,"counts":207,"children":208,"datetimeDone":46,"userFiles":249,"userRecord":46,"metadata":46,"accessibleFrom":46,"earliestAccessibleFrom":46},3675,"Práce",{"duration":26,"testsQuestions":26},[209,219,229,239],{"id":210,"free":26,"name":211,"slug":212,"status":48,"type":49,"counts":213,"children":215,"url":216,"lectionOrder":217,"datetimeDone":46,"userFiles":218,"userRecord":46,"metadata":46},817,"Práce ve fyzice","prace-ve-fyzice",{"duration":214,"testsQuestions":26},727,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F817",16,[],{"id":220,"free":26,"name":221,"slug":222,"status":48,"type":49,"counts":223,"children":225,"url":226,"lectionOrder":227,"datetimeDone":46,"userFiles":228,"userRecord":46,"metadata":46},818,"Příklad na práci tíhové síly","priklad-na-praci-tihove-sily",{"duration":224,"testsQuestions":26},387,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F818",17,[],{"id":230,"free":26,"name":231,"slug":232,"status":48,"type":49,"counts":233,"children":235,"url":236,"lectionOrder":237,"datetimeDone":46,"userFiles":238,"userRecord":46,"metadata":46},819,"Příklad na práci urychlující síly","priklad-na-praci-urychlujici-sily",{"duration":234,"testsQuestions":26},143,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F819",18,[],{"id":240,"free":26,"name":241,"slug":242,"status":48,"type":49,"counts":243,"children":245,"url":246,"lectionOrder":247,"datetimeDone":46,"userFiles":248,"userRecord":46,"metadata":46},820,"Příklad na práci pružné síly","priklad-na-praci-pruzne-sily",{"duration":244,"testsQuestions":26},232,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F820",19,[],[],{"id":251,"free":46,"name":252,"slug":46,"status":48,"type":49,"counts":253,"children":254,"datetimeDone":46,"userFiles":295,"userRecord":46,"metadata":46,"accessibleFrom":46,"earliestAccessibleFrom":46},3680,"Energie",{"duration":26,"testsQuestions":26},[255,265,275,285],{"id":256,"free":26,"name":257,"slug":258,"status":48,"type":49,"counts":259,"children":261,"url":262,"lectionOrder":263,"datetimeDone":46,"userFiles":264,"userRecord":46,"metadata":46},821,"Energie a zákon zachováni energie","energie-a-zakon-zachovani-energie",{"duration":260,"testsQuestions":26},407,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F821",20,[],{"id":266,"free":29,"name":267,"slug":268,"status":48,"type":49,"counts":269,"children":271,"url":272,"lectionOrder":273,"datetimeDone":46,"userFiles":274,"userRecord":46,"metadata":46},822,"Příklad - smyčka smrti","priklad-smycka-smrti",{"duration":270,"testsQuestions":26},419,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F822",21,[],{"id":276,"free":26,"name":277,"slug":278,"status":48,"type":49,"counts":279,"children":281,"url":282,"lectionOrder":283,"datetimeDone":46,"userFiles":284,"userRecord":46,"metadata":46},823,"Těleso na pružině a třecí síla","teleso-na-pruzine-a-treci-sila",{"duration":280,"testsQuestions":26},451,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F823",22,[],{"id":286,"free":26,"name":287,"slug":288,"status":48,"type":49,"counts":289,"children":291,"url":292,"lectionOrder":293,"datetimeDone":46,"userFiles":294,"userRecord":46,"metadata":46},824,"Shrnutí energie","shrnuti-energie",{"duration":290,"testsQuestions":26},147,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F824",23,[],[],{"id":297,"free":46,"name":298,"slug":46,"status":48,"type":49,"counts":299,"children":300,"datetimeDone":46,"userFiles":360,"userRecord":46,"metadata":46,"accessibleFrom":46,"earliestAccessibleFrom":46},3685,"Hybnost",{"duration":26,"testsQuestions":26},[301,311,321,330,340,350],{"id":302,"free":26,"name":303,"slug":304,"status":48,"type":49,"counts":305,"children":307,"url":308,"lectionOrder":309,"datetimeDone":46,"userFiles":310,"userRecord":46,"metadata":46},825,"Hybnost a zákon zachování hybnosti","hybnost-a-zakon-zachovani-hybnosti",{"duration":306,"testsQuestions":26},433,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F825",24,[],{"id":312,"free":26,"name":313,"slug":314,"status":48,"type":49,"counts":315,"children":317,"url":318,"lectionOrder":319,"datetimeDone":46,"userFiles":320,"userRecord":46,"metadata":46},826,"Dokonale nepružná srážka","dokonale-nepruzna-srazka",{"duration":316,"testsQuestions":26},431,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F826",25,[],{"id":322,"free":26,"name":323,"slug":324,"status":48,"type":49,"counts":325,"children":327,"url":328,"lectionOrder":13,"datetimeDone":46,"userFiles":329,"userRecord":46,"metadata":46},827,"Balistické kyvadlo","balisticke-kyvadlo",{"duration":326,"testsQuestions":26},482,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F827",[],{"id":331,"free":26,"name":332,"slug":333,"status":48,"type":49,"counts":334,"children":336,"url":337,"lectionOrder":338,"datetimeDone":46,"userFiles":339,"userRecord":46,"metadata":46},828,"Pružná srážka","pruzna-srazka",{"duration":335,"testsQuestions":26},950,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F828",27,[],{"id":341,"free":26,"name":342,"slug":343,"status":48,"type":49,"counts":344,"children":346,"url":347,"lectionOrder":348,"datetimeDone":46,"userFiles":349,"userRecord":46,"metadata":46},829,"Příklad - Raketa","priklad-raketa",{"duration":345,"testsQuestions":26},427,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F829",28,[],{"id":351,"free":26,"name":352,"slug":353,"status":48,"type":49,"counts":354,"children":356,"url":357,"lectionOrder":358,"datetimeDone":46,"userFiles":359,"userRecord":46,"metadata":46},830,"Shrnutí hybnosti","shrnuti-hybnosti",{"duration":355,"testsQuestions":26},116,[],"\u002Fvideokurz\u002Ffyzika-mechanika-i\u002F830",29,[],[],"course",{"id":363,"main_source":46,"token_bunny":364,"bunny_library":365,"token_vimeo":366,"token_youtube":46,"frameio_url":46,"thumbnail_id":367,"duration":368},768,"cca3ebba-2cf7-4365-a1ab-8f55d701c8ff",34802,167973256,"fb5633b6-6ef0-4672-b357-07c62ec58c35",77,[],[],[],[373],{"id":5,"name":6,"surname":7,"biography":8,"web":9,"slug":10},[375,378,381],{"id":319,"name":376,"slug":377},"Vysoká škola","vysoka-skola",{"id":137,"name":379,"slug":380},"Fyzika","fyzika",{"id":29,"name":382,"slug":383},"Do školy","do-skoly","\u002Fvideokurz\u002Ffyzika-mechanika-i",false,{"duration":387,"lections":358,"tests":26,"testsQuestions":26,"rating":388,"packageCoursesMaxPrice":26,"packageCoursesTotalPricesPerLicenceLength":389,"packageCourses":26,"minPeriodForRating":390},12610,100,{},1008800000,[],"2016-08-01T00:00:00.000Z",[]]