[{"question":"Vyberte pr\u00edklad, kedy teleso pr\u00e1cu nekon\u00e1.","answers":["k\u00f4\u0148 \u0165ah\u00e1 voz","vietor poh\u00e1\u0148a plachetnicu","\u010dlovek dr\u017e\u00ed n\u00e1kup","pr\u00fad vody ot\u00e1\u010da turb\u00ednu"],"correct":"\u010dlovek dr\u017e\u00ed n\u00e1kup","order":"1"},{"question":"\u010co nie je naklonen\u00e1 rovina?","answers":["z\u00e1kruta","skrutka","nakladacia rampa","serpent\u00edna"],"correct":"z\u00e1kruta","order":"2"},{"question":"Ako zv\u00e4\u010d\u0161uje silu pevn\u00e1 kladka?","answers":["pod\u013ea toho na ko\u013ek\u00fdch koncoch lana vis\u00ed","nezv\u00e4\u010d\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","v\u017edy 4 -kr\u00e1t","naopak silu zmen\u0161uje"],"correct":"nezv\u00e4\u010d\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","order":"3"},{"question":"Pre\u010do vo\u013en\u00e1 kladka zmen\u0161uje silu?","answers":["nezmen\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","lebo jeden koniec lana, na ktorom kladka vis\u00ed, je upevnen\u00fd","naopak, silu zv\u00e4\u010d\u0161uje","lebo je pohybliv\u00e1"],"correct":"lebo jeden koniec lana, na ktorom kladka vis\u00ed, je upevnen\u00fd","order":"4"},{"question":"R\u00fdchlov\u00fd\u0165ah s cestuj\u00facimi m\u00e1 hmotnos\u0165 600 kg. Ak\u00fd m\u00e1 v\u00fdkon, ak vyjde do v\u00fd\u0161ky 30 m za 3 s?","answers":["6000 W","6 kW","60 kW","18 kW"],"correct":"60 kW","order":"5"},{"question":"Pod\u013ea ak\u00e9ho vz\u0165ahu po\u010d\u00edtame v\u00fdkon?","answers":["W = s.t","P = W.t","W = P\/t","P = W\/t"],"correct":"P = W\/t","order":"6"},{"question":"Pre\u010do m\u00e1 vykopnut\u00e1 lopta pohybov\u00fa energiu?","answers":["lebo m\u00f4\u017ee vykona\u0165 pr\u00e1cu - rozbi\u0165 okno","lebo je vo v\u00fd\u0161ke","lebo pohybov\u00fa energiu m\u00e1 ka\u017ed\u00e9 teleso","nie je to pravda"],"correct":"lebo m\u00f4\u017ee vykona\u0165 pr\u00e1cu - rozbi\u0165 okno","order":"7"},{"question":"Kedy z\u00edska cyklista polohov\u00fa energiu?","answers":["ke\u010f zr\u00fdch\u013euje","ke\u010f sa zvezie z kopca","ke\u010f vyst\u00fapy na kopec","ke\u010f zmen\u00ed svoju polohu"],"correct":"ke\u010f vyst\u00fapy na kopec","order":"8"},{"question":"K ak\u00fdm premen\u00e1m energie doch\u00e1dza, ke\u010f sa \u0161myknem dolu na vodnej k\u013aza\u010dke?","answers":["polohov\u00e1 energia sa men\u00ed na pohybov\u00fa","pohybov\u00e1 energia sa men\u00ed na polohov\u00fa","zv\u00e4\u010d\u0161uje sa polohov\u00e1 energia","zmen\u0161uje sa pohybov\u00e1 energia"],"correct":"polohov\u00e1 energia sa men\u00ed na pohybov\u00fa","order":"9"},{"question":"Pre\u010do, po odraze od podlahy, lopti\u010dka nevyst\u00fapy do p\u00f4vodnej v\u00fd\u0161ky?","answers":["nie je to pravda","lebo pri st\u00fapan\u00ed lopti\u010dky sa ve\u013ea energie str\u00e1ca.","lebo vznik\u00e1 nov\u00e1 energia","lebo sa \u010das\u0165 energie pou\u017eije na stla\u010denie lopti\u010dky pri odraze"],"correct":"lebo sa \u010das\u0165 energie pou\u017eije na stla\u010denie lopti\u010dky pri odraze","order":"10"}]