{"common":{"save":0,"post_id":"8904","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4780","post_id":"8904","mon_id":"1159414","chapter_id":"1159498","question":"<p>M\u1ed9t xe máy \u0111i quãng \u0111\u01b0\u1eddng dài 100 km trong 2 gi\u1edd. Tính v\u1eadn t\u1ed1c c\u1ee7a xe máy \u0111ó (theo \u0111\u01a1n v\u1ecb km\/h).<\/p>","options":["<strong>A.<\/strong> 5 km\/h.","<strong>B.<\/strong> 50 km\/h.","<strong>C.<\/strong> 100 km\/h.","<strong>D.<\/strong> 25 km\/h."],"correct":"2","level":"1","hint":"<p>Mu\u1ed1n tính v\u1eadn t\u1ed1c ta l\u1ea5y quãng \u0111\u01b0\u1eddng chia cho th\u1eddi gian.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 50 km\/h.<\/span><\/p><p>V\u1eadn t\u1ed1c c\u1ee7a xe máy là 100 : 2 = 50 (km\/h).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-17 08:53:32","option_type":"txt","len":1},{"id":"4781","post_id":"8904","mon_id":"1159414","chapter_id":"1159498","question":"<p>G\u1ecdi v\u1eadn t\u1ed1c là v, quãng \u0111\u01b0\u1eddng là s, th\u1eddi gian là t. Công th\u1ee9c nào sau \u0111ây là <strong>\u0111úng<\/strong>?<\/p>","options":["<strong>A.<\/strong> v = s . t.","<strong>B.<\/strong> s = v : t.","<strong>C.<\/strong> v = s : t.","<strong>D.<\/strong> t = v : s."],"correct":"3","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> v = s : t.<\/span><\/p><p>G\u1ecdi v\u1eadn t\u1ed1c là v, quãng \u0111\u01b0\u1eddng là s, th\u1eddi gian là t. Công th\u1ee9c \u0111úng là <span style=\"color:#16a085;\"><strong>v = s : t<\/strong><\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-17 08:55:13","option_type":"txt","len":1},{"id":"4783","post_id":"8904","mon_id":"1159414","chapter_id":"1159498","question":"<p>M\u1ed9t ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p trên quãng \u0111\u01b0\u1eddng dài 600 m trong 2 phút. Tính v\u1eadn t\u1ed1c c\u1ee7a ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p \u0111ó (theo \u0111\u01a1n v\u1ecb m\/s).<\/p>","options":["<strong>A.<\/strong> 5 m\/s.","<strong>B.<\/strong> 6 m\/s.","<strong>C.<\/strong> 10 m\/s.","<strong>D.<\/strong> 3 m\/s."],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 5 m\/s.<\/span><\/p><p>\u0110\u1ed5i: 2 phút = 120 giây<\/p><p>V\u1eadn t\u1ed1c c\u1ee7a ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p là 600 : 120 = 5 (m\/s).<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"0","date":"2025-04-17 08:59:59","option_type":"txt","len":0}]}
