[{"question":"Dopl\u0148te: Sila je fyzik\u00e1lna veli\u010dina, ktor\u00e1 je priamo \u00famern\u00e1:","answers":["s\u00fa\u010dinu hmotnosti a zr\u00fdchlenia","s\u00fa\u010dtu hmotnosti a zr\u00fdchlenia","podielu hmotnosti a zr\u00fdchlenia","rozdielu hmotnosti a zr\u00fdchlenia"],"correct":"s\u00fa\u010dinu hmotnosti a zr\u00fdchlenia","order":"1"},{"question":"Ktor\u00e9 z uveden\u00fdch tvrden\u00ed o v\u00fdslednici dvoch r\u00f4znobe\u017en\u00fdch s\u00edl je pravdiv\u00e9?","answers":["m\u00e1 smer v\u00e4\u010d\u0161ej sily","m\u00e1 smer men\u0161ej sily","dostaneme ju ako s\u00fa\u010det s\u00edl","je to orientovan\u00e1 uhloprie\u010dka rovnobe\u017en\u00edka"],"correct":"je to orientovan\u00e1 uhloprie\u010dka rovnobe\u017en\u00edka","order":"2"},{"question":"Dve sily s\u00fa na seba kolm\u00e9. Ich ve\u013ekosti s\u00fa 5N a 6N. Ak\u00e1 ve\u013ek\u00e1 je v\u00fdslednica?","answers":["6,8 N","7,8 N","8,8 N","9,8 N"],"correct":"7,8 N","order":"3"},{"question":"Ktor\u00e9 z uveden\u00fdch pr\u00edpadov predstavuje 2 r\u00f4znobe\u017en\u00e9 sily v praxi?","answers":["tla\u010denie voz\u00edka dvoma \u013eu\u010fmi v rovnobe\u017enom smere","roztiahnut\u00e9 kru\u017eidlo zavesen\u00e9 na pru\u017eine","h\u00e1dzanie lopty","na\u0165ahovanie gumy na sk\u00e1kanie"],"correct":"roztiahnut\u00e9 kru\u017eidlo zavesen\u00e9 na pru\u017eine","order":"4"},{"question":"Dve sily maj\u00fa ve\u013ekos\u0165 9N a 12 N. Tieto sily s\u00fa na seba kolm\u00e9. Ak\u00fa ve\u013ekos\u0165 m\u00e1 v\u00fdslednica t\u00fdchto s\u00edl?","answers":["3N","21 N","15 N","108 N"],"correct":"15 N","order":"5"},{"question":"Rovnobe\u017en\u00edk s\u00edl je tak\u00fd rovnobe\u017en\u00edk, ktor\u00e9ho:","answers":["susedn\u00e9 strany zn\u00e1zor\u0148uj\u00fa r\u00f4znobe\u017en\u00e9 sily, ktor\u00e9 p\u00f4sobia na teleso aspo\u0148 v dvoch bodoch","proti\u013eahl\u00e9 strany zn\u00e1zor\u0148uj\u00fa r\u00f4znobe\u017en\u00e9 sily, ktor\u00e9 p\u00f4sobia na teleso aspo\u0148 v dvoch bodoch","susedn\u00e9 strany zn\u00e1zor\u0148uj\u00fa r\u00f4znobe\u017en\u00e9 sily, ktor\u00e9 p\u00f4sobia na teleso v jednom bode","proti\u013eahl\u00e9 strany zn\u00e1zor\u0148uj\u00fa r\u00f4znobe\u017en\u00e9 sily, ktor\u00e9 p\u00f4sobia na teleso v jednom bode"],"correct":"susedn\u00e9 strany zn\u00e1zor\u0148uj\u00fa r\u00f4znobe\u017en\u00e9 sily, ktor\u00e9 p\u00f4sobia na teleso v jednom bode","order":"6"},{"question":"V\u00fdslednica dvoch s\u00edl m\u00e1 ve\u013ekos\u0165 25 N. Jedna zo s\u00edl m\u00e1 ve\u013ekos\u0165 3N. Ak\u00e1 ve\u013ek\u00e1 je druh\u00e1 sila?","answers":["1 N","2 N","3 N","4 N"],"correct":"4 N","order":"7"},{"question":"Ak\u00fd je vz\u0165ah na v\u00fdpo\u010det v\u00fdslednice dvoch r\u00f4znobe\u017en\u00fdch s\u00edl?","answers":["Fv2<\/sup> = F1<\/sub>2<\/sup> + F2<\/sub>2<\/sup> \u2013 2*F1<\/sub>*F2<\/sub>*cos(180\u00b0 - r)","Fv2<\/sup> = F1<\/sub>2<\/sup> - F2<\/sub>2<\/sup> + 2*F1<\/sub>*F2<\/sub>*cos(180\u00b0 - r)","Fv2<\/sup> = F1<\/sub>2<\/sup> - F2<\/sub>2<\/sup> \u2013 2*F1<\/sub>*F2<\/sub>*cos(180\u00b0 - r)","Fv2<\/sup> = F1<\/sub>2<\/sup> + F2<\/sub>2<\/sup> + 2*F1<\/sub>*F2<\/sub>*cos(180\u00b0 - r)"],"correct":"Fv2<\/sup> = F1<\/sub>2<\/sup> + F2<\/sub>2<\/sup> \u2013 2*F1<\/sub>*F2<\/sub>*cos(180\u00b0 - r)","order":"8"},{"question":"Do ak\u00e9ho tvaru prejde uveden\u00fd vz\u0165ah v pr\u00edpade, \u017ee sily s\u00fa na seba kolm\u00e9?","answers":["prv\u00fd \u010dlen (F1<\/sub>) bude nulov\u00fd","druh\u00fd \u010dlen (F2<\/sub>) bude nulov\u00fd","ni\u010d sa nezmen\u00ed","posledn\u00fd \u010dlen (2 * F1<\/sub> * F2<\/sub> * cos(180\u00b0 - r)) bude nulov\u00fd"],"correct":"posledn\u00fd \u010dlen (2 * F1<\/sub> * F2<\/sub> * cos(180\u00b0 - r)) bude nulov\u00fd","order":"9"},{"question":"Jednotkou sily je:","answers":["Pa","J","N","kg"],"correct":"N","order":"10"}]