{"common":{"save":0,"post_id":"8476","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7572","mon_id":"1158790","chapter_id":"1158796","post_id":"8476","question":"<p>Trong c&aacute;c c&aacute;ch vi\u1ebft c&ocirc;ng th\u1ee9c c\u1ee7a \u0111\u1ecbnh lu\u1eadt II&nbsp;Newton sau \u0111&acirc;y, c&aacute;ch vi\u1ebft n&agrave;o <strong>\u0111&uacute;ng<\/strong>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$-\\overrightarrow{F}=m.\\overrightarrow{a}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$F=m.\\overrightarrow{a}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\overrightarrow{F}=m.a$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\overrightarrow{F}=m.\\overrightarrow{a}$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\overrightarrow{F}=m.\\overrightarrow{a}$<\/span><\/span><\/p><p>H\u1ec7 qu\u1ea3 c\u1ee7a \u0111\u1ecbnh lu\u1eadt II Newton:&nbsp;<span class=\"math-tex\">$\\overrightarrow{F}=m.\\overrightarrow{a}$<\/span>.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-20 08:10:48","option_type":"math","len":0},{"id":"7603","mon_id":"1158790","chapter_id":"1158796","post_id":"8476","question":"<p>Ch\u1ecdn c&acirc;u <strong>sai<\/strong>?<\/p>","options":["<strong>A.<\/strong> Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt l&agrave; \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho m\u1ee9c qu&aacute;n t&iacute;nh c\u1ee7a v\u1eadt.<br \/>\n ","<strong>B. <\/strong>Kh\u1ed1i l\u01b0\u1ee3ng l&agrave; m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v&ocirc; h\u01b0\u1edbng, d\u01b0\u01a1ng.","<strong>C.<\/strong> V\u1eadt c&oacute; kh\u1ed1i l\u01b0\u1ee3ng c&agrave;ng l\u1edbn th&igrave; c&agrave;ng d\u1ec5 thay \u0111\u1ed5i v\u1eadn t\u1ed1c.","<strong>D.<\/strong> D\u01b0\u1edbi t&aacute;c d\u1ee5ng c\u1ee7a c&ugrave;ng m\u1ed9t l\u1ef1c, v\u1eadt n&agrave;o c&oacute; kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n th&igrave; gia t\u1ed1c nh\u1ecf h\u01a1n."],"correct":"3","level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n sai l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong> V\u1eadt c&oacute; kh\u1ed1i l\u01b0\u1ee3ng c&agrave;ng l\u1edbn th&igrave; c&agrave;ng d\u1ec5&nbsp;thay \u0111\u1ed5i v\u1eadn t\u1ed1c.<\/span><\/p><p>V&igrave; v\u1eadt c&oacute; kh\u1ed1i l\u01b0\u1ee3ng c&agrave;ng l\u1edbn th&igrave; c&agrave;ng kh&oacute; thay \u0111\u1ed5i v\u1eadn t\u1ed1c, qu&aacute;n t&iacute;nh c&agrave;ng l\u1edbn.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-21 08:49:14","option_type":"txt","len":3},{"id":"7605","mon_id":"1158790","chapter_id":"1158796","post_id":"8476","question":"<p>H&atilde;y ch\u1ec9 ra k\u1ebft lu\u1eadn <strong>sai<\/strong>. L\u1ef1c l&agrave; nguy&ecirc;n nh&acirc;n&nbsp;l&agrave;m cho<\/p>","options":["<strong>A.<\/strong> v\u1eadt chuy\u1ec3n \u0111\u1ed9ng.","<strong>B.<\/strong> h&igrave;nh d\u1ea1ng c\u1ee7a v\u1eadt thay \u0111\u1ed5i.","<strong>C.<\/strong> \u0111\u1ed9 l\u1edbn v\u1eadn t\u1ed1c c\u1ee7a v\u1eadt thay \u0111\u1ed5i.","<strong>D.<\/strong> h\u01b0\u1edbng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt thay \u0111\u1ed5i."],"correct":"1","level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n sai l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;v\u1eadt chuy\u1ec3n \u0111\u1ed9ng.<\/span><\/p><p>B, C, D \u0111&uacute;ng.<\/p><p>A sai v&igrave; tr&aacute;i v\u1edbi \u0111\u1ecbnh lu\u1eadt 1 Newton.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-21 08:51:41","option_type":"txt","len":2}]}