{"id":5571,"date":"2021-11-20T09:31:01","date_gmt":"2021-11-20T02:31:01","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5571"},"modified":"2021-11-20T12:41:14","modified_gmt":"2021-11-20T05:41:14","slug":"vi-sao-tau-thuy-bao-gio-cung-cap-ben-nguoc-dong","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-tau-thuy-bao-gio-cung-cap-ben-nguoc-dong\/","title":{"rendered":"V\u00ec sao t\u00e0u thu\u1ef7 bao gi\u1edd c\u0169ng c\u1eadp b\u1ebfn ng\u01b0\u1ee3c d\u00f2ng?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Xe \u0111\u1ea1p c\u00f3 c\u00e1i phanh, \u00f4 t\u00f4 v\u00e0 t\u00e0u ho\u1ea3 c\u0169ng c\u00f3 c\u00e1i phanh, v\u1eady t\u00e0u thu\u1ef7 c\u00f3 &#8220;c\u00e1i phanh&#8221; kh\u00f4ng?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111i t\u00e0u thu\u1ef7 th\u00ec s\u1ebd ph\u00e1t hi\u1ec7n m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng r\u1ea5t l\u00ed th\u00fa: m\u1ed7i khi t\u00e0u thu\u1ef7 mu\u1ed1n c\u1eadp b\u1ebfn, bao gi\u1edd c\u0169ng \u0111\u01b0a m\u0169i t\u00e0u \u0111\u00f3n l\u1ea5y d\u00f2ng n\u01b0\u1edbc, t\u1eeb t\u1eeb nghi\u00eang v\u1ec1 ph\u00eda b\u1ebfn t\u00e0u r\u1ed3i m\u1edbi y\u00ean \u1ed5n c\u1eadp b\u1ebfn. \u0110\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng t\u00e0u ch\u1ea1y xu\u00f4i d\u00f2ng, khi ch\u00fang \u0111\u1ebfn n\u01a1i quy \u0111\u1ecbnh, kh\u00f4ng c\u1eadp b\u1ebfn ngay m\u00e0 qu\u00e0nh m\u1ed9t v\u00f2ng r\u1ed9ng tr\u01b0\u1edbc \u0111\u00e3, l\u00e0m cho t\u00e0u ch\u1ea1y ng\u01b0\u1ee3c d\u00f2ng, r\u1ed3i m\u1edbi t\u1eeb t\u1eeb c\u1eadp b\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede \u0111\u00e2y c\u00f3 b\u00e0i to\u00e1n \u0111\u01a1n gi\u1ea3n, b\u1ea1n h\u00e3y th\u1eed l\u00e0m xem. Gi\u1ea3 d\u1ee5 t\u1ed1c \u0111\u1ed9 d\u00f2ng n\u01b0\u1edbc l\u00e0 3 km\/gi\u1edd. Khi t\u00e0u s\u1eafp c\u1eadp b\u1ebfn, m\u00e1y t\u00e0u \u0111\u00e3 ng\u1eebng r\u1ed3i, t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00e0u l\u00e0 4 km\/h. L\u00fac \u1ea5y, n\u1ebfu l\u00e0 xu\u00f4i d\u00f2ng, m\u1ed7i gi\u1edd t\u00e0u ch\u1ea1y \u0111\u01b0\u1ee3c m\u1ea5y kil\u00f4met? C\u00f2n n\u1ebfu ng\u01b0\u1ee3c d\u00f2ng th\u00ec sao?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n bu\u1ed9t m\u1ed3m c\u00f3 th\u1ec3 n\u00f3i ngay ra \u0111\u00e1p \u00e1n. \u0110\u00f3 l\u00e0, khi xu\u00f4i d\u00f2ng, m\u1ed7i gi\u1edd t\u00e0u ch\u1ea1y \u0111\u01b0\u1ee3c 7 km, c\u00f2n ng\u01b0\u1ee3c d\u00f2ng th\u00ec m\u1ed7i gi\u1edd t\u00e0u ch\u1ea1y \u0111\u01b0\u1ee3c 1 km.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mu\u1ed1n cho t\u00e0u ng\u1eebng l\u1ea1i th\u00ec t\u00e0u ch\u1ea1y 7 km\/h v\u00e0 t\u00e0u ch\u1ea1y 1 km\/h c\u00e1i n\u00e0o d\u1ec5 d\u1eebng h\u01a1n. \u0110\u01b0\u01a1ng nhi\u00ean l\u00e0 t\u00e0u c\u00f3 t\u1ed1c \u0111\u1ed9 c\u00e0ng ch\u1eadm th\u00ec c\u00e0ng d\u1ec5 d\u1eebng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb \u0111\u00f3 ta th\u1ea5y, \u0111\u1ec3 cho t\u00e0u c\u1eadp b\u1ebfn ng\u01b0\u1ee3c d\u00f2ng th\u00ec c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng s\u1ee9c c\u1ea3n c\u1ee7a d\u00f2ng n\u01b0\u1edbc l\u00ean th\u00e2n t\u00e0u l\u00e0m m\u1ed9t ph\u1ea7n t\u00e1c d\u1ee5ng c\u1ee7a &#8220;c\u00e1i phanh&#8221;. T\u1ea5t nhi\u00ean tr\u00ean t\u00e0u c\u0169ng c\u00f3 l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb v\u00e0 \u0111\u1ed9ng l\u1ef1c &#8220;phanh&#8221;, v\u00ed d\u1ee5 nh\u01b0, khi t\u00e0u c\u1eadp b\u1ebfn ho\u1eb7c x\u1ea3y ra t\u00ecnh h\u00ecnh kh\u1ea9n c\u1ea5p tr\u00ean \u0111\u01b0\u1eddng v\u1eadn h\u00e0nh, r\u1ea5t c\u1ea7n d\u1eebng l\u1ea1i, th\u00ec c\u00f3 th\u1ec3 th\u1ea3 neo. \u0110\u1ed3ng th\u1eddi, \u0111\u1ed9ng c\u01a1 ch\u00ednh c\u1ee7a t\u00e0u c\u00f2n c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng ch\u1ea1y l\u00f9i l\u1ea1i \u0111\u1ec3 g\u00e2y t\u00e1c d\u1ee5ng &#8220;phanh&#8221;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a : T\u00e0u thu\u1ef7; C\u00e1i phanh; T\u1ed1c \u0111\u1ed9; L\u1ef1c c\u1ea3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Xe \u0111\u1ea1p c\u00f3 c\u00e1i phanh, \u00f4 t\u00f4 v\u00e0 t\u00e0u ho\u1ea3 c\u0169ng c\u00f3 c\u00e1i phanh, v\u1eady t\u00e0u thu\u1ef7 c\u00f3 &#8220;c\u00e1i phanh&#8221; kh\u00f4ng? N\u1ebfu b\u1ea1n \u0111i t\u00e0u thu\u1ef7 th\u00ec s\u1ebd ph\u00e1t hi\u1ec7n m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng r\u1ea5t l\u00ed th\u00fa: m\u1ed7i khi t\u00e0u thu\u1ef7 mu\u1ed1n c\u1eadp b\u1ebfn, bao gi\u1edd c\u0169ng \u0111\u01b0a m\u0169i t\u00e0u \u0111\u00f3n l\u1ea5y d\u00f2ng n\u01b0\u1edbc, t\u1eeb t\u1eeb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-5571","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=5571"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5571\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}