Bài tập trung bình bài Bài 1: Chuyển động cơ học

Home Lớp 8 Vật Lý 8 Bài 1: Chuyển động cơ học Bài tập luyện

{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"C\u00f3 m\u1ed9t \u00f4t\u00f4 \u0111ang ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng. C\u00e2u m\u00f4 t\u1ea3 n\u00e0o sau \u0111\u00e2y l\u00e0 kh\u00f4ng \u0111\u00fang? ","select":["A. \u00d4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng.","B. \u00d4 t\u00f4 \u0111\u1ee9ng y\u00ean so v\u1edbi ng\u01b0\u1eddi l\u00e1i xe. ","C. \u00d4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi ng\u01b0\u1eddi l\u00e1i xe. ","D. \u00d4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi c\u00e2y b\u00ean \u0111\u01b0\u1eddng."],"hint":"","explain":"Khi \u00f4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng, n\u00f3 \u0111\u1ee9ng y\u00ean so v\u1edbi ng\u01b0\u1eddi l\u00e1i xe v\u00ec ng\u01b0\u1eddi l\u00e1i ng\u1ed3i tr\u00ean xe, g\u1eafn li\u1ec1n v\u1edbi xe.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2480},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 \u0111ang ng\u1ed3i y\u00ean tr\u00ean chi\u1ebfc thuy\u1ec1n th\u1ea3 tr\u00f4i theo d\u00f2ng n\u01b0\u1edbc. C\u00e2u m\u00f4 t\u1ea3 n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang?","select":["A. Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 \u0111\u1ee9ng y\u00ean so v\u1edbi d\u00f2ng n\u01b0\u1edbc. ","B. Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi d\u00f2ng n\u01b0\u1edbc. ","C. Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 \u0111\u1ee9ng y\u00ean so v\u1edbi b\u1edd s\u00f4ng. ","D. Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi chi\u1ebfc thuy\u1ec1n."],"hint":"","explain":"Ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 \u0111ang ng\u1ed3i y\u00ean tr\u00ean chi\u1ebfc thuy\u1ec1n th\u1ea3 tr\u00f4i theo d\u00f2ng n\u01b0\u1edbc th\u00ec ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 \u0111\u1ee9ng y\u00ean so v\u1edbi d\u00f2ng n\u01b0\u1edbc v\u00ec ng\u01b0\u1eddi l\u00e1i \u0111\u00f2 g\u1eafn li\u1ec1n v\u1edbi chi\u1ebfc thuy\u1ec1n v\u00e0 c\u00f9ng chuy\u1ec3n \u0111\u1ed9ng v\u1edbi thuy\u1ec1n.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2481},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"C\u00e2u n\u00e0o sau \u0111\u00e2y m\u00f4 t\u1ea3 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt n\u1eb7ng \u0111\u01b0\u1ee3c th\u1ea3 r\u01a1i t\u1eeb m\u1ed9t \u0111\u1ec9nh c\u1ed9t bu\u1ed3m c\u1ee7a m\u1ed9t con thuy\u1ec1n \u0111ang chuy\u1ec3n \u0111\u1ed9ng d\u1ecdc theo d\u00f2ng s\u00f4ng:","select":["A. C\u1ea3 ng\u01b0\u1eddi \u0111\u1ee9ng tr\u00ean thuy\u1ec1n v\u00e0 tr\u00ean b\u1edd \u0111\u1ec1u th\u1ea5y v\u1eadt r\u01a1i d\u1ecdc theo c\u1ed9t bu\u1ed3m. ","B. Ng\u01b0\u1eddi \u0111\u1ee9ng tr\u00ean b\u1edd th\u1ea5y v\u1eadt r\u01a1i theo ph\u01b0\u01a1ng cong. ","C. Ng\u01b0\u1eddi \u0111\u1ee9ng tr\u00ean thuy\u1ec1n th\u1ea5y v\u1eadt r\u01a1i ph\u01b0\u01a1ng cong.","D. Ng\u01b0\u1eddi \u0111\u1ee9ng tr\u00ean b\u1edd th\u1ea5y v\u1eadt r\u01a1i th\u1eb3ng \u0111\u1ee9ng."],"hint":"","explain":"M\u1ed9t v\u1eadt n\u1eb7ng \u0111\u01b0\u1ee3c th\u1ea3 r\u01a1i t\u1eeb m\u1ed9t \u0111\u1ec9nh c\u1ed9t bu\u1ed3m c\u1ee7a m\u1ed9t con thuy\u1ec1n \u0111ang chuy\u1ec3n \u0111\u1ed9ng d\u1ecdc theo d\u00f2ng s\u00f4ng th\u00ec ng\u01b0\u1eddi tr\u00ean b\u1edd th\u1ea5y th\u1ea5y v\u1eadt r\u01a1i theo ph\u01b0\u01a1ng cong.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2482},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"M\u1ed9t m\u00e1y bay chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng b\u0103ng \u0111\u1ec3 c\u1ea5t c\u00e1nh. \u0110\u1ed1i v\u1edbi h\u00e0nh kh\u00e1ch \u0111ang ng\u1ed3i tr\u00ean m\u00e1y bay th\u00ec:","select":["A. M\u00e1y bay \u0111ang chuy\u1ec3n \u0111\u1ed9ng. ","B. Ng\u01b0\u1eddi phi c\u00f4ng \u0111ang chuy\u1ec3n \u0111\u1ed9ng.","C. H\u00e0nh kh\u00e1ch \u0111ang chuy\u1ec3n \u0111\u1ed9ng.","D. S\u00e2n bay \u0111ang chuy\u1ec3n \u0111\u1ed9ng."],"hint":"","explain":"M\u1ed9t m\u00e1y bay chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng b\u0103ng \u0111\u1ec3 c\u1ea5t c\u00e1nh. \u0110\u1ed1i v\u1edbi h\u00e0nh kh\u00e1ch \u0111ang ng\u1ed3i tr\u00ean m\u00e1y bay th\u00ec s\u00e2n bay \u0111ang chuy\u1ec3n \u0111\u1ed9ng.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2483},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"M\u1ed9t v\u1eadt \u0111\u1ee9ng y\u00ean khi:","select":["A. V\u1ecb tr\u00ed c\u1ee7a n\u00f3 so v\u1edbi m\u1ed9t \u0111i\u1ec3m m\u1ed1c lu\u00f4n thay \u0111\u1ed5i.","B. Kho\u1ea3ng c\u00e1ch c\u1ee7a n\u00f3 \u0111\u1ebfn m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng m\u1ed1c kh\u00f4ng \u0111\u1ed5i.","C. V\u1ecb tr\u00ed c\u1ee7a n\u00f3 so v\u1edbi v\u1eadt m\u1ed1c kh\u00f4ng \u0111\u1ed5i.","D. Kho\u1ea3ng c\u00e1ch c\u1ee7a n\u00f3 \u0111\u1ebfn m\u1ed9t \u0111i\u1ec3m m\u1ed1c kh\u00f4ng \u0111\u1ed5i."],"hint":"","explain":"M\u1ed9t v\u1eadt \u0111\u1ee9ng y\u00ean khi v\u1ecb tr\u00ed c\u1ee7a n\u00f3 so v\u1edbi v\u1eadt m\u1ed1c kh\u00f4ng \u0111\u1ed5i.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2484},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"M\u1ed9t \u00f4t\u00f4 ch\u1edf kh\u00e1ch \u0111ang ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng. H\u00e3y ch\u1ec9 r\u00f5 v\u1eadt l\u00e0m m\u1ed1c khi n\u00f3i \u00f4 t\u00f4 \u0111ang chuy\u1ec3n \u0111\u1ed9ng? ","select":["A. C\u00e2y c\u1ed1i b\u00ean \u0111\u01b0\u1eddng.","B. Ng\u01b0\u1eddi l\u00e1i xe.","C. Ng\u01b0\u1eddi ng\u1ed3i trong xe.","D. \u00d4t\u00f4."],"hint":"","explain":"\u00d4 t\u00f4 \u0111ang chuy\u1ec3n \u0111\u1ed9ng khi l\u1ea5y c\u00e2y c\u1ed1i b\u00ean \u0111\u01b0\u1eddng l\u00e0m v\u1eadt m\u1ed1c.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2485},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Khi n\u00f3i Tr\u00e1i \u0110\u1ea5t quay quanh M\u1eb7t Tr\u1eddi ta \u0111\u00e3 ch\u1ecdn v\u1eadt n\u00e0o l\u00e0m m\u1ed1c?","select":["A. Tr\u00e1i \u0110\u1ea5t. ","B. M\u1eb7t Tr\u1eddi.","C. Con ng\u01b0\u1eddi tr\u00ean Tr\u00e1i \u0110\u1ea5t. ","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00fang."],"hint":"","explain":"Khi n\u00f3i Tr\u00e1i \u0110\u1ea5t quay quanh M\u1eb7t Tr\u1eddi ta \u0111\u00e3 ch\u1ecdn M\u1eb7t Tr\u1eddi l\u00e0m m\u1ed1c.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2486},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Qu\u1ef9 \u0111\u1ea1o chuy\u1ebfn \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt n\u1eb7ng \u0111\u01b0\u1ee3c n\u00e9m theo ph\u01b0\u01a1ng n\u1eb1m ngang c\u00f3 d\u1ea1ng?","select":["A. Chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n. ","B. Chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng. ","C. Chuy\u1ec3n \u0111\u1ed9ng cong. ","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00fang."],"hint":"","explain":"Qu\u1ef9 \u0111\u1ea1o chuy\u1ebfn \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt n\u1eb7ng \u0111\u01b0\u1ee3c n\u00e9m theo ph\u01b0\u01a1ng n\u1eb1m ngang c\u00f3 d\u1ea1ng chuy\u1ec3n \u0111\u1ed9ng cong.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2487},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"M\u1ed9t \u0111o\u00e0n t\u00e0u h\u1ecfa \u0111ang ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng ray. Ng\u01b0\u1eddi l\u00e1i t\u00e0u ng\u1ed3i trong bu\u1ed3ng l\u00e1i. Ng\u01b0\u1eddi so\u00e1t v\u00e9 \u0111ang \u0111i l\u1ea1i tr\u00ean \u0111o\u00e0n t\u00e0u. C\u00e2y c\u1ed1i ven \u0111\u01b0\u1eddng \u0111\u1ee9ng y\u00ean so v\u1edbi:","select":["A. Ng\u01b0\u1eddi so\u00e1t v\u00e9.","B. \u0110\u01b0\u1eddng t\u00e0u. ","C. Ng\u01b0\u1eddi l\u00e1i t\u00e0u. ","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00fang."],"hint":"","explain":"C\u00e2y c\u1ed1i ven \u0111\u01b0\u1eddng \u0111\u1ee9ng y\u00ean so v\u1edbi \u0111\u01b0\u1eddng t\u00e0u.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2488},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y c\u1ee7a h\u00e0nh kh\u00e1ch ng\u1ed3i tr\u00ean \u0111o\u00e0n t\u00e0u \u0111ang ch\u1ea1y l\u00e0 \u0111\u00fang?","select":["A. C\u1ed9t \u0111\u00e8n b\u00ean \u0111\u01b0\u1eddng chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi \u0111\u01b0\u1eddng ","B. \u0110\u1ea7u t\u00e0u chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi toa t\u00e0u.","C. H\u00e0nh kh\u00e1ch \u0111ang ng\u1ed3i tr\u00ean t\u00e0u chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi \u0111\u1ea7u t\u00e0u. ","D. Ng\u01b0\u1eddi so\u00e1t v\u00e9 \u0111ang \u0111i tr\u00ean t\u00e0u chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi \u0111\u1ea7u t\u00e0u."],"hint":"","explain":"Kh\u1eb3ng \u0111\u1ecbnh \u0111\u00fang l\u00e0 D. Ng\u01b0\u1eddi so\u00e1t v\u00e9 \u0111ang \u0111i tr\u00ean t\u00e0u chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi \u0111\u1ea7u t\u00e0u.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2489},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Khi x\u00e9t tr\u1ea1ng th\u00e1i \u0111\u1ee9ng y\u00ean hay chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt, th\u00ec v\u1eadt \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m m\u1ed1c:","select":["A. Ph\u1ea3i l\u00e0 Tr\u00e1i \u0110\u1ea5t.","B. Ph\u1ea3i l\u00e0 v\u1eadt \u0111ang \u0111\u1ee9ng y\u00ean.","C. Ph\u1ea3i l\u00e0 v\u1eadt g\u1eafn v\u1edbi Tr\u00e1i \u0110\u1ea5t.","D. C\u00f3 th\u1ec3 l\u00e0 b\u1ea5t k\u00ec v\u1eadt n\u00e0o."],"hint":"","explain":"Khi x\u00e9t tr\u1ea1ng th\u00e1i \u0111\u1ee9ng y\u00ean hay chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt, th\u00ec v\u1eadt \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m m\u1ed1c c\u00f3 th\u1ec3 l\u00e0 b\u1ea5t k\u00ec v\u1eadt n\u00e0o, v\u1edbi c\u00e1c m\u1ed1c kh\u00e1c nhau th\u00ec v\u1eadt c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed9ng kh\u00e1c nhau.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2490},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Hai \u00f4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng c\u00f9ng chi\u1ec1u v\u00e0 nhanh nh\u01b0 nhau tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng. Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y kh\u00f4ng \u0111\u00fang <\/b> khi n\u00f3i v\u1ec1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a hai xe? ","select":["A. Hai xe c\u00f9ng chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi c\u00e2y c\u1ed1i ven \u0111\u01b0\u1eddng. ","B. Hai xe c\u00f9ng \u0111\u1ee9ng y\u00ean so v\u1edbi c\u00e1c ng\u01b0\u1eddi l\u00e1i xe. ","C. Xe n\u00e0y chuy\u1ebfn \u0111\u1ed9ng so v\u1edbi xe kia. ","D. Xe n\u00e0y \u0111\u1ee9ng y\u00ean so v\u1edbi xe kia."],"hint":"","explain":"Hai \u00f4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng c\u00f9ng chi\u1ec1u v\u00e0 nhanh nh\u01b0 nhau tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u00ec xe n\u00e0y \u0111\u1ee9ng y\u00ean so v\u1edbi xe kia.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2491},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc l\u00e0 s\u1ef1 thay \u0111\u1ed5i: ","select":["A. Kho\u1ea3ng c\u00e1ch c\u1ee7a v\u1eadt chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi v\u1eadt m\u1ed1c. ","B. V\u1eadn t\u1ed1c c\u1ee7a v\u1eadt. ","C. V\u1ecb tr\u00ed c\u1ee7a v\u1eadt so v\u1edbi v\u1eadt m\u1ed1c. ","D. Ph\u01b0\u01a1ng, chi\u1ec1u c\u1ee7a v\u1eadt."],"hint":"","explain":"Theo \u0111\u1ecbnh ngh\u0129a: Chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc l\u00e0 s\u1ef1 thay \u0111\u1ed5i v\u1ecb tr\u00ed c\u1ee7a v\u1eadt so v\u1edbi v\u1eadt m\u1ed1c.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2492},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Theo d\u01b0\u01a1ng l\u1ecbch, m\u1ed9t ng\u00e0y \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 th\u1eddi gian chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a Tr\u00e1i \u0110\u1ea5t quay m\u1ed9t v\u00f2ng quanh v\u1eadt l\u00e0m m\u1ed1c l\u00e0:","select":["A. Tr\u1ee5c Tr\u00e1i \u0110\u1ea5t.","B. M\u1eb7t Tr\u1eddi.","C. M\u1eb7t Tr\u0103ng.","D. Sao Ho\u1ea3."],"hint":"","explain":"Theo d\u01b0\u01a1ng l\u1ecbch, m\u1ed9t ng\u00e0y \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 th\u1eddi gian chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a Tr\u00e1i \u0110\u1ea5t quay m\u1ed9t v\u00f2ng quanh v\u1eadt l\u00e0m m\u1ed1c l\u00e0 tr\u1ee5c Tr\u00e1i \u0110\u1ea5t.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2493},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang? ","select":["A. Chuy\u1ec3n \u0111\u1ed9ng cong l\u00e0 chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n. ","B. Chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n l\u00e0 chuy\u1ec3n \u0111\u1ed9ng cong. ","C. Hai v\u1eadt c\u00f9ng chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi v\u1eadt th\u1ee9 ba th\u00ec hai v\u1eadt n\u00e0y \u0111\u1ee9ng y\u00ean \u0111\u1ed1i v\u1edbi nhau. ","D. Hai v\u1eadt c\u00f9ng \u0111\u1ee9ng y\u00ean so v\u1edbi v\u1eadt th\u1ee9 ba th\u00ec hai v\u1eadt n\u00e0y chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ed1i v\u1edbi nhau."],"hint":"","explain":"Chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n l\u00e0 chuy\u1ec3n \u0111\u1ed9ng cong, c\u1ee5 th\u1ec3 l\u00e0 chuy\u1ec3n \u0111\u1ed9ng v\u1edbi qu\u1ef9 \u0111\u1ea1o l\u00e0 h\u00ecnh tr\u00f2n.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2494},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Qu\u1ef9 \u0111\u1ea1o chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt l\u00e0: ","select":["A. \u0110\u01b0\u1eddng m\u00e0 v\u1eadt chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra trong kh\u00f4ng gian. ","B. \u0110\u01b0\u1eddng th\u1eb3ng v\u1eadt chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra trong kh\u00f4ng gian. ","C. \u0110\u01b0\u1eddng tr\u00f2n v\u1eadt chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra \u01b0ong kh\u00f4ng gian. ","D. \u0110\u01b0\u1eddng cong v\u1eadt chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra trong kh\u00f4ng gian."],"hint":"","explain":"Qu\u1ef9 \u0111\u1ea1o chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt l\u00e0 \u0111\u01b0\u1eddng m\u00e0 v\u1eadt chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra trong kh\u00f4ng gian. <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2495},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"D\u1ea1ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a vi\u00ean \u0111\u1ea1n \u0111\u01b0\u1ee3c b\u1eafn ra t\u1eeb kh\u1ea9u s\u00fang AK l\u00e0:","select":["A. Chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng.","B. Chuy\u1ec3n \u0111\u1ed9ng cong.","C. Chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n.","D. V\u1eeba chuy\u1ec3n \u0111\u1ed9ng cong v\u1eeba chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng."],"hint":"","explain":"D\u1ea1ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a vi\u00ean \u0111\u1ea1n \u0111\u01b0\u1ee3c b\u1eafn ra t\u1eeb kh\u1ea9u s\u00fang AK l\u00e0 chuy\u1ec3n \u0111\u1ed9ng cong.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2496},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"M\u1ed9t h\u00e0nh kh\u00e1ch \u0111ang ng\u1ed3i tr\u00ean xe bu\u00fdt \u0111i t\u1eeb Th\u1ee7y Ph\u00f9 l\u00ean Hu\u1ebf, h\u00e0nh kh\u00e1ch n\u00e0y chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi:","select":["A. T\u00e0i x\u1ebf ","B. M\u1ed9t h\u00e0nh kh\u00e1ch kh\u00e1c","C. M\u1ed9t ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p tr\u00ean \u0111\u01b0\u1eddng v\u00e0 m\u1ed9t h\u00e0nh kh\u00e1ch","D. C\u1ed9t m\u1ed1c v\u00e0 m\u1ed9t ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p tr\u00ean \u0111\u01b0\u1eddng."],"hint":"","explain":"M\u1ed9t h\u00e0nh kh\u00e1ch \u0111ang ng\u1ed3i tr\u00ean xe bu\u00fdt \u0111i t\u1eeb Th\u1ee7y Ph\u00f9 l\u00ean Hu\u1ebf, h\u00e0nh kh\u00e1ch n\u00e0y chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi c\u1ed9t m\u1ed1c v\u00e0 m\u1ed9t ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p tr\u00ean \u0111\u01b0\u1eddng.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2497},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"M\u1ed9t con chim m\u1eb9 tha m\u1ed3i v\u1ec1 cho con. Chim m\u1eb9 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi ...(1)... nh\u01b0ng l\u1ea1i \u0111\u1ee9ng y\u00ean so v\u1edbi ...(2)...","select":["A. (1) chim con - (2) con m\u1ed3i. ","B. (1) con m\u1ed3i - (2) chim con.","C. (1) chim con - (2) t\u1ed5.","D. (1) t\u1ed5 - (2) chim con."],"hint":"","explain":"M\u1ed9t con chim m\u1eb9 tha m\u1ed3i v\u1ec1 cho con. Chim m\u1eb9 chuy\u1ec3n \u0111\u1ed9ng so v\u1edbi (1) chim non nh\u01b0ng l\u1ea1i \u0111\u1ee9ng y\u00ean so v\u1edbi (2) con m\u1ed3i.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2498},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"D\u1ea1ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a tua-bin n\u01b0\u1edbc trong nh\u00e0 m\u00e1y th\u1ee7y \u0111i\u1ec7n s\u00f4ng \u0110\u00e0 l\u00e0:","select":["A. Chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng.","B. Chuy\u1ec3n \u0111\u1ed9ng cong.","C. Chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n.","D. V\u1eeba chuy\u1ec3n \u0111\u1ed9ng cong v\u1eeba chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng."],"hint":"","explain":"D\u1ea1ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a tua-bin n\u01b0\u1edbc trong nh\u00e0 m\u00e1y th\u1ee7y \u0111i\u1ec7n s\u00f4ng \u0110\u00e0 l\u00e0 chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n.<br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2499}],"lesson":{"save":0,"level":2}}

Điểm của bạn.

Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên	+ 5 điểm
Trong khoảng 1 phút -> 2 phút	+ 4 điểm
Trong khoảng 2 phút -> 3 phút	+ 3 điểm
Trong khoảng 3 phút -> 4 phút	+ 2 điểm
Trong khoảng 4 phút -> 5 phút	+ 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

Điểm của bạn.

Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý

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