{"id":30782,"date":"2023-09-22T22:49:44","date_gmt":"2023-09-22T15:49:44","guid":{"rendered":"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi"},"modified":"2023-09-22T22:49:44","modified_gmt":"2023-09-22T15:49:44","slug":"van-toc-la-gi","status":"publish","type":"post","link":"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadn t\u1ed1c v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh v\u1eadn t\u1ed1c trong V\u1eadt l\u00fd 8"},"content":{"rendered":"<p>V\u1eadn t\u1ed1c l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong v\u1eadt l\u00fd, \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i c\u1ee7a kho\u1ea3ng c\u00e1ch theo th\u1eddi gian. N\u00f3 cho bi\u1ebft t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a m\u1ed9t v\u1eadt hay ng\u01b0\u1eddi v\u00e0 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch chia kho\u1ea3ng c\u00e1ch \u0111\u00e3 \u0111i cho th\u1eddi gian di chuy\u1ec3n. V\u1eadn t\u1ed1c gi\u00fap ta hi\u1ec3u v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n, l\u00e0 kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng, v\u00e0 khoa h\u1ecdc t\u1ef1 nhi\u00ean.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_40 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-6acdf2e8cb49f\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-6acdf2e8cb49f\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#1_Van_toc_la_gi\" title=\"1. V\u1eadn t\u1ed1c l\u00e0 g\u00ec?\">1. V\u1eadn t\u1ed1c l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Vi_du\" title=\"V\u00ed d\u1ee5:\">V\u00ed d\u1ee5:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Don_vi\" title=\"\u0110\u01a1n v\u1ecb:\">\u0110\u01a1n v\u1ecb:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#2_Cong_thuc_tinh_van_toc_va_don_vi_cua_van_toc\" title=\"2. C\u00f4ng th\u1ee9c t\u00ednh v\u1eadn t\u1ed1c v\u00e0 \u0111\u01a1n v\u1ecb c\u1ee7a v\u1eadn t\u1ed1c\">2. C\u00f4ng th\u1ee9c t\u00ednh v\u1eadn t\u1ed1c v\u00e0 \u0111\u01a1n v\u1ecb c\u1ee7a v\u1eadn t\u1ed1c<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Don_vi-2\" title=\"\u0110\u01a1n v\u1ecb:\">\u0110\u01a1n v\u1ecb:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#3_Su_nhanh_cham_cua_chuyen_dong_duoc_nhan_biet_qua_dai_luong_nao\" title=\"3. S\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft qua \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0o?\">3. S\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft qua \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0o?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Toc_do\" title=\"T\u1ed1c \u0111\u1ed9\">T\u1ed1c \u0111\u1ed9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#4_Vi_du_ve_viec_tinh_toan_van_toc_trong_cac_chuyen_dong_khac_nhau\" title=\"4. V\u00ed d\u1ee5 v\u1ec1 vi\u1ec7c t\u00ednh to\u00e1n v\u1eadn t\u1ed1c trong c\u00e1c chuy\u1ec3n \u0111\u1ed9ng kh\u00e1c nhau\">4. V\u00ed d\u1ee5 v\u1ec1 vi\u1ec7c t\u00ednh to\u00e1n v\u1eadn t\u1ed1c trong c\u00e1c chuy\u1ec3n \u0111\u1ed9ng kh\u00e1c nhau<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Van_toc_trung_binh\" title=\"V\u1eadn t\u1ed1c trung b\u00ecnh\">V\u1eadn t\u1ed1c trung b\u00ecnh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#5_Don_vi_do_van_toc_trong_hang_hai_va_trong_thien_van_hoc\" title=\"5. \u0110\u01a1n v\u1ecb \u0111o v\u1eadn t\u1ed1c trong h\u00e0ng h\u1ea3i v\u00e0 trong thi\u00ean v\u0103n h\u1ecdc\">5. \u0110\u01a1n v\u1ecb \u0111o v\u1eadn t\u1ed1c trong h\u00e0ng h\u1ea3i v\u00e0 trong thi\u00ean v\u0103n h\u1ecdc<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Hang_hai\" title=\"H\u00e0ng h\u1ea3i\">H\u00e0ng h\u1ea3i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Thien_van_hoc\" title=\"Thi\u00ean v\u0103n h\u1ecdc\">Thi\u00ean v\u0103n h\u1ecdc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#6_Ung_dung_cua_cong_thuc_va_don_vi_van_toc_trong_giai_cac_bai_toan\" title=\"6. \u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c trong gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n\">6. \u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c trong gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/ungdung.hotronghiencuu.com\/open\/van-toc-la-gi\/#Bai_toan_van_toc\" title=\"B\u00e0i to\u00e1n v\u1eadn t\u1ed1c\">B\u00e0i to\u00e1n v\u1eadn t\u1ed1c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1_Van_toc_la_gi\"><\/span>1. V\u1eadn t\u1ed1c l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>V\u1eadn t\u1ed1c l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m trong v\u1eadt l\u00fd, n\u00f3 \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 theo th\u1eddi gian. N\u00f3 cho bi\u1ebft m\u1ee9c \u0111\u1ed9 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng v\u00e0 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng t\u1ec9 l\u1ec7 gi\u1eefa qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n v\u00e0 th\u1eddi gian di chuy\u1ec3n. V\u1eadn t\u1ed1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh cho c\u1ea3 c\u00e1c chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u v\u00e0 kh\u00f4ng th\u1eb3ng \u0111\u1ec1u.<\/p>\n<p>\u0110\u1ed1i v\u1edbi chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u, v\u1eadn t\u1ed1c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00f4ng th\u1ee9c: v = \u0394x\/\u0394t, trong \u0111\u00f3 v l\u00e0 v\u1eadn t\u1ed1c, \u0394x l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n v\u00e0 \u0394t l\u00e0 kho\u1ea3ng th\u1eddi gian di chuy\u1ec3n.<\/p>\n<p>\u0110\u1ed1i v\u1edbi chuy\u1ec3n \u0111\u1ed9ng kh\u00f4ng th\u1eb3ng \u0111\u1ec1u, ta c\u00f3 th\u1ec3 t\u00ednh to\u00e1n v\u1eadn t\u1ed1c trung b\u00ecnh trong m\u1ed7i kho\u1ea3ng nh\u1ecf c\u1ee7a qu\u00e3ng \u0111\u01b0\u1eddng. Sau khi t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gi\u1edbi h\u1ea1n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1eadn t\u1ed1c t\u1ee9c th\u1eddi c\u1ee7a m\u1ed9t \u0111i\u1ec3m c\u1ee5 th\u1ec3 tr\u00ean qu\u1ef9 \u0111\u1ea1o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Vi_du\"><\/span>V\u00ed d\u1ee5:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Gi\u1ea3 s\u1eed b\u1ea1n \u0111i t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng. Qu\u00e3ng \u0111\u01b0\u1eddng t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng l\u00e0 5 km v\u00e0 b\u1ea1n m\u1ea5t 30 ph\u00fat \u0111\u1ec3 di chuy\u1ec3n. \u0110\u1ec3 t\u00ednh to\u00e1n v\u1eadn t\u1ed1c c\u1ee7a b\u1ea1n, ta s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c: v = \u0394x\/\u0394t = 5 km \/ 0.5 gi\u1edd = 10 km\/gi\u1edd. V\u1eady v\u1eadn t\u1ed1c c\u1ee7a b\u1ea1n l\u00e0 10 km\/h.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Don_vi\"><\/span>\u0110\u01a1n v\u1ecb:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 \u0111o v\u1eadn t\u1ed1c l\u00e0 m\u00e9t\/gi\u00e2y (m\/s) ho\u1eb7c kil\u00f4m\u00e9t\/gi\u1edd (km\/h). Tuy nhi\u00ean, trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c nhau \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u1eadn t\u1ed1c. Ch\u1eb3ng h\u1ea1n, trong h\u00e0ng h\u1ea3i, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng h\u1ea3i l\u00fd\/gi\u1edd (knots) \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00e0u v\u00e0 trong thi\u00ean v\u0103n h\u1ecdc, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng parsecs\/n\u0103m \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a c\u00e1c ng\u00f4i sao.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"2_Cong_thuc_tinh_van_toc_va_don_vi_cua_van_toc\"><\/span>2. C\u00f4ng th\u1ee9c t\u00ednh v\u1eadn t\u1ed1c v\u00e0 \u0111\u01a1n v\u1ecb c\u1ee7a v\u1eadn t\u1ed1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n v\u1eadn t\u1ed1c l\u00e0:<br \/>\nv = \u0394x\/\u0394t<br \/>\nTrong \u0111\u00f3:<br \/>\n&#8211; V l\u00e0 v\u1eadn t\u1ed1c.<br \/>\n&#8211; \u0394x l\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n.<br \/>\n&#8211; \u0394t l\u00e0 kho\u1ea3ng th\u1eddi gian di chuy\u1ec3n.<\/p>\n<p>\u0110\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 \u0111o v\u1eadn t\u1ed1c l\u00e0 m\u00e9t\/gi\u00e2y (m\/s) ho\u1eb7c kil\u00f4m\u00e9t\/gi\u1edd (km\/h). Tuy nhi\u00ean, trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c nhau \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u1eadn t\u1ed1c. Ch\u1eb3ng h\u1ea1n, trong h\u00e0ng h\u1ea3i, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng h\u1ea3i l\u00fd\/gi\u1edd (knots) \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00e0u v\u00e0 trong thi\u00ean v\u0103n h\u1ecdc, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng parsecs\/n\u0103m \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a c\u00e1c ng\u00f4i sao.<\/p>\n<p>V\u00ed d\u1ee5:<br \/>\n1. N\u1ebfu b\u1ea1n \u0111i t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 5 km v\u00e0 m\u1ea5t 30 ph\u00fat (0.5 gi\u1edd), b\u1ea1n c\u00f3 th\u1ec3 t\u00ednh to\u00e1n v\u1eadn t\u1ed1c b\u1eb1ng c\u00e1ch chia qu\u00e3ng \u0111\u01b0\u1eddng cho th\u1eddi gian: V = 5 km \/ 0.5 gi\u1edd = 10 km\/gi\u1edd.<br \/>\n2. N\u1ebfu b\u1ea1n l\u00e1i xe \u0111i t\u1eeb th\u00e0nh ph\u1ed1 A \u0111\u1ebfn th\u00e0nh ph\u1ed1 B v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 200 km v\u00e0 m\u1ea5t 4 gi\u1edd, b\u1ea1n c\u00f3 th\u1ec3 t\u00ednh to\u00e1n v\u1eadn t\u1ed1c b\u1eb1ng c\u00e1ch chia qu\u00e3ng \u0111\u01b0\u1eddng cho th\u1eddi gian: V = 200 km \/ 4 gi\u1edd = 50 km\/gi\u1edd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Don_vi-2\"><\/span>\u0110\u01a1n v\u1ecb:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; \u0110\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 \u0111o v\u1eadn t\u1ed1c l\u00e0 m\u00e9t\/gi\u00e2y (m\/s) ho\u1eb7c kil\u00f4m\u00e9t\/gi\u1edd (km\/h).<br \/>\n&#8211; Trong h\u00e0ng h\u1ea3i, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng h\u1ea3i l\u00fd\/gi\u1edd (knots) \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00e0u.<br \/>\n&#8211; Trong thi\u00ean v\u0103n h\u1ecdc, ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng parsecs\/n\u0103m \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a c\u00e1c ng\u00f4i sao.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"3_Su_nhanh_cham_cua_chuyen_dong_duoc_nhan_biet_qua_dai_luong_nao\"><\/span>3. S\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft qua \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" alt=\"3. S\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft qua \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0o?\" src=\"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-content\/uploads\/2023\/09\/tim_hieu_ve_van_toc_va_cong_thuc_tinh_van_toc_trong_vat_ly_8.jpeg\" style=\"text-align: center; clear: both; display: block; margin: 0 auto;\" title=\"3. S\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft qua \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0o?\"\/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toc_do\"><\/span>T\u1ed1c \u0111\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u1ed1c \u0111\u1ed9 l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng \u0111\u1ec3 \u0111o l\u01b0\u1eddng s\u1ef1 nhanh ch\u1eadm c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng. T\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch di chuy\u1ec3n trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. \u0110\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 l\u00e0 m\u00e9t tr\u00ean gi\u00e2y (m\/s) ho\u1eb7c kil\u00f4m\u00e9t tr\u00ean gi\u1edd (km\/h).<\/p>\n<p>V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n \u0111i xe m\u00e1y t\u1eeb \u0111i\u1ec3m A \u0111\u1ebfn \u0111i\u1ec3m B trong 1 gi\u1edd v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 60 km, th\u00ec t\u1ed1c \u0111\u1ed9 c\u1ee7a b\u1ea1n s\u1ebd l\u00e0 60 km\/h.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"4_Vi_du_ve_viec_tinh_toan_van_toc_trong_cac_chuyen_dong_khac_nhau\"><\/span>4. V\u00ed d\u1ee5 v\u1ec1 vi\u1ec7c t\u00ednh to\u00e1n v\u1eadn t\u1ed1c trong c\u00e1c chuy\u1ec3n \u0111\u1ed9ng kh\u00e1c nhau<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Van_toc_trung_binh\"><\/span>V\u1eadn t\u1ed1c trung b\u00ecnh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1eadn t\u1ed1c trung b\u00ecnh \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch chia t\u1ed5ng qu\u00e3ng \u0111\u01b0\u1eddng di chuy\u1ec3n cho t\u1ed5ng th\u1eddi gian di chuy\u1ec3n. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n l\u00e1i xe t\u1eeb nh\u00e0 ra c\u00f4ng ty v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 20 km, m\u1ea5t 30 ph\u00fat, sau \u0111\u00f3 t\u1eeb c\u00f4ng ty v\u1ec1 nh\u00e0 v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 20 km, m\u1ea5t 40 ph\u00fat, th\u00ec v\u1eadn t\u1ed1c trung b\u00ecnh c\u1ee7a b\u1ea1n s\u1ebd l\u00e0:<\/p>\n<p>(20 km + 20 km) \/ (30 ph\u00fat + 40 ph\u00fat) = 40 km \/ 70 ph\u00fat = 0.57 km\/ph\u00fat<\/p>\n<h2><span class=\"ez-toc-section\" id=\"5_Don_vi_do_van_toc_trong_hang_hai_va_trong_thien_van_hoc\"><\/span>5. \u0110\u01a1n v\u1ecb \u0111o v\u1eadn t\u1ed1c trong h\u00e0ng h\u1ea3i v\u00e0 trong thi\u00ean v\u0103n h\u1ecdc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Hang_hai\"><\/span>H\u00e0ng h\u1ea3i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\u0110\u01a1n v\u1ecb \u0111o t\u1ed1c \u0111\u1ed9 trong h\u00e0ng h\u1ea3i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 h\u1ea3i l\u00fd tr\u00ean gi\u1edd (knots). M\u1ed9t h\u1ea3i l\u00fd tr\u00ean gi\u1edd t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ed9t h\u1ea3i l\u00fd di chuy\u1ec3n trong m\u1ed9t gi\u1edd.<\/li>\n<li>V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t t\u00e0u \u0111i t\u1eeb \u0111i\u1ec3m A \u0111\u1ebfn \u0111i\u1ec3m B trong 4 gi\u1edd v\u00e0 qu\u00e3ng \u0111\u01b0\u1eddng l\u00e0 100 h\u1ea3i l\u00fd, th\u00ec t\u1ed1c \u0111\u1ed9 c\u1ee7a t\u00e0u s\u1ebd l\u00e0 25 knots.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Thien_van_hoc\"><\/span>Thi\u00ean v\u0103n h\u1ecdc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Trong thi\u00ean v\u0103n h\u1ecdc, t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u00e1c thi\u00ean th\u1ec3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1ch t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch di chuy\u1ec3n c\u1ee7a ch\u00fang trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li>\u0110\u01a1n v\u1ecb th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 \u0111o t\u1ed1c \u0111\u1ed9 trong thi\u00ean v\u0103n h\u1ecdc l\u00e0 kil\u00f4m\u00e9t tr\u00ean gi\u00e2y (km\/s) ho\u1eb7c m\u00e9t tr\u00ean gi\u00e2y (m\/s).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"6_Ung_dung_cua_cong_thuc_va_don_vi_van_toc_trong_giai_cac_bai_toan\"><\/span>6. \u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c trong gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" alt=\"6. \u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c trong gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n\" src=\"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-content\/uploads\/2023\/09\/tim_hieu_ve_van_toc_va_cong_thuc_tinh_van_toc_trong_vat_ly_8-1.jpeg\" style=\"text-align: center; clear: both; display: block; margin: 0 auto;\" title=\"6. \u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c trong gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n\"\/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bai_toan_van_toc\"><\/span>B\u00e0i to\u00e1n v\u1eadn t\u1ed1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb v\u1eadn t\u1ed1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong vi\u1ec7c gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng. V\u00ed d\u1ee5, khi c\u1ea7n t\u00ednh to\u00e1n th\u1eddi gian di chuy\u1ec3n t\u1eeb \u0111i\u1ec3m A \u0111\u1ebfn \u0111i\u1ec3m B d\u1ef1a tr\u00ean qu\u00e3ng \u0111\u01b0\u1eddng v\u00e0 t\u1ed1c \u0111\u1ed9, ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c:<\/p>\n<p>Th\u1eddi gian = Qu\u00e3ng \u0111\u01b0\u1eddng \/ T\u1ed1c \u0111\u1ed9<\/p>\n<p>\u0110\u01a1n v\u1ecb c\u1ee7a qu\u00e3ng \u0111\u01b0\u1eddng v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u1ea3i \u0111\u01b0\u1ee3c ch\u1ecdn sao cho ph\u00f9 h\u1ee3p \u0111\u1ec3 k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n l\u00e0 m\u1ed9t kho\u1ea3ng th\u1eddi gian.<\/p>\n<p>V\u1eadn t\u1ed1c l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong v\u1eadt l\u00fd, \u0111o l\u01b0\u1eddng s\u1ef1 di chuy\u1ec3n c\u1ee7a c\u00e1c v\u1eadt th\u1ec3. N\u00f3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch chia kho\u1ea3ng c\u00e1ch \u0111i \u0111\u01b0\u1ee3c cho th\u1eddi gian m\u1ea5t \u0111i. V\u1eadn t\u1ed1c c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n b\u1eb1ng m\/s ho\u1eb7c km\/h. Hi\u1ec3u r\u00f5 v\u1ec1 v\u1eadn t\u1ed1c gi\u00fap ta hi\u1ec3u v\u00e0 \u1ee9ng d\u1ee5ng v\u00e0o nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau nh\u01b0 xe c\u1ed9, h\u00e0ng kh\u00f4ng, th\u1ec3 thao v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa.<br \/>\n<iframe loading=\"lazy\" title=\"TTV; T\u1ed1c \u0111\u1ed9 v\u00e0 V\u1eadn t\u1ed1c! Nghe quen thu\u1ed9c nh\u01b0ng kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5. T\u00ecm hi\u1ec3u r\u00f5 trong 6 ph\u00fat\" width=\"790\" height=\"444\" src=\"https:\/\/www.youtube.com\/embed\/wl59Kko_VuI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u1eadn t\u1ed1c l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong v\u1eadt l\u00fd, \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i c\u1ee7a kho\u1ea3ng c\u00e1ch theo th\u1eddi gian. N\u00f3 cho bi\u1ebft t\u1ed1c \u0111\u1ed9&#8230; <\/p>\n","protected":false},"author":1,"featured_media":30780,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-30782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-khai-niem-1"],"_links":{"self":[{"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/posts\/30782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/comments?post=30782"}],"version-history":[{"count":0,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/posts\/30782\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/media\/30780"}],"wp:attachment":[{"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/media?parent=30782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/categories?post=30782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ungdung.hotronghiencuu.com\/open\/wp-json\/wp\/v2\/tags?post=30782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}