Cơ năng và định luật bảo toàn cơ năng (dễ)

Home Lớp 10 Vật lý 10 - Sách kết nối tri thức Bài 26: Cơ năng và định luật bảo toàn cơ năngBài tập cơ bản

{"common":{"save":0,"post_id":"6408","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6522","mon_id":"1158790","chapter_id":"1158864","post_id":"6408","question":"Khi con l\u1eafc \u0111\u01a1n \u0111\u1ebfn v\u1ecb trí cao nh\u1ea5t thì<\/p>","options":["A.<\/strong> \u0111\u1ed9ng n\u0103ng \u0111\u1ea1t giá tr\u1ecb c\u1ef1c \u0111\u1ea1i.","B.<\/strong> th\u1ebf n\u0103ng b\u1eb1ng \u0111\u1ed9ng n\u0103ng.","C.<\/strong> th\u1ebf n\u0103ng \u0111\u1ea1t giá tr\u1ecb c\u1ef1c \u0111\u1ea1i.","D.<\/strong> c\u01a1 n\u0103ng b\u1eb1ng không."],"correct":"3","level":"1","hint":"Th\u1ebf n\u0103ng h\u1ea5p d\u1eabn t\u1ec9 l\u1ec7 v\u1edbi \u0111\u1ed9 cao, \u0111\u1ed9ng n\u0103ng t\u1ec9 l\u1ec7 v\u1edbi v\u1eadn t\u1ed1c c\u1ee7a v\u1eadt.<\/p>","answer":"Khi con l\u1eafc \u0111\u01a1n \u0111\u1ebfn v\u1ecb trí cao nh\u1ea5t thì th\u1ebf n\u0103ng \u0111\u1ea1t giá tr\u1ecb c\u1ef1c \u0111\u1ea1i và \u0111\u1ed9ng n\u0103ng c\u1ef1c ti\u1ec3u (b\u1eb1ng 0). \u0110áp án \u0111úng: C. th\u1ebf n\u0103ng \u0111\u1ea1t giá tr\u1ecb c\u1ef1c \u0111\u1ea1i.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-03-30 08:58:45","option_type":"txt","len":2},{"id":"6523","mon_id":"1158790","chapter_id":"1158864","post_id":"6408","question":"Trong quá trình r\u01a1i t\u1ef1 do c\u1ee7a m\u1ed9t v\u1eadt thì<\/p>","options":["A. <\/strong>\u0111\u1ed9ng n\u0103ng t\u0103ng, th\u1ebf n\u0103ng t\u0103ng.","B.<\/strong> \u0111\u1ed9ng n\u0103ng t\u0103ng, th\u1ebf n\u0103ng gi\u1ea3m.","C.<\/strong> \u0111\u1ed9ng n\u0103ng gi\u1ea3m, th\u1ebf n\u0103ng gi\u1ea3m.","D. <\/strong>\u0111\u1ed9ng n\u0103ng gi\u1ea3m, th\u1ebf n\u0103ng t\u0103ng."],"correct":"2","level":"1","hint":"Khi v\u1eadt r\u01a1i thì \u0111\u1ed9 cao gi\u1ea3m và v\u1eadt r\u01a1i nhanh h\u01a1n.<\/p>","answer":"Trong quá trình r\u01a1i t\u1ef1 do c\u1ee7a m\u1ed9t v\u1eadt thì \u0111\u1ed9ng n\u0103ng t\u0103ng và th\u1ebf n\u0103ng gi\u1ea3m. \u0110áp án \u0111úng: B. \u0111\u1ed9ng n\u0103ng t\u0103ng, th\u1ebf n\u0103ng gi\u1ea3m.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-03-30 09:00:20","option_type":"txt","len":2},{"id":"6524","mon_id":"1158790","chapter_id":"1158864","post_id":"6408","question":"M\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c th\u1ea3 r\u01a1i t\u1ef1 do, trong quá trình v\u1eadt r\u01a1i<\/p>","options":["A.<\/strong> \u0111\u1ed9ng n\u0103ng c\u1ee7a v\u1eadt không thay \u0111\u1ed5i.","B. <\/strong>th\u1ebf n\u0103ng c\u1ee7a v\u1eadt không thay \u0111\u1ed5i.","C. <\/strong>t\u1ed5ng \u0111\u1ed9ng n\u0103ng và th\u1ebf n\u0103ng c\u1ee7a v\u1eadt không \u0111\u1ed5i.","D. <\/strong>t\u1ed5ng \u0111\u1ed9ng n\u0103ng và th\u1ebf n\u0103ng c\u1ee7a v\u1eadt luôn thay \u0111\u1ed5i."],"correct":"3","level":"1","hint":"","answer":"M\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c th\u1ea3 r\u01a1i t\u1ef1 do, trong quá trình v\u1eadt r\u01a1i \u0111\u1ed9ng n\u0103ng và th\u1ebf n\u0103ng thay \u0111\u1ed5i nh\u01b0ng t\u1ed5ng \u0111\u1ed9ng n\u0103ng và th\u1ebf n\u0103ng c\u1ee7a v\u1eadt không \u0111\u1ed5i. \u0110áp án \u0111úng: C. t\u1ed5ng \u0111\u1ed9ng n\u0103ng và th\u1ebf n\u0103ng c\u1ee7a v\u1eadt không \u0111\u1ed5i.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-03-30 09:01:31","option_type":"txt","len":3}]}