{"id":13407,"date":"2025-06-02T02:35:22","date_gmt":"2025-06-01T19:35:22","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=13407"},"modified":"2025-07-02T09:45:04","modified_gmt":"2025-07-02T02:45:04","slug":"dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/","title":{"rendered":"\u0110\u1ed9ng n\u0103ng l\u00e0 g\u00ec? Bi\u1ec3u th\u1ee9c t\u00ednh \u0111\u1ed9ng n\u0103ng &amp; b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng (V\u1eadt L\u00fd 10)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 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\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/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:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/#Dong_nang_la_gi\" >\u0110\u1ed9ng n\u0103ng l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/#Cong_thuc_dong\" >C\u00f4ng th\u1ee9c \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/#Dong_nang_cua_cac_vat_the_ran\" >\u0110\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 r\u1eafn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/#Dinh_ly_dong\" >\u0110\u1ecbnh l\u00fd \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/dong-nang-la-gi-bieu-thuc-tinh-dong-nang-bai-tap-van-dung-vat-ly-10\/#Tap_the_duc_ve_dong_nang_vat_ly_10_Bai_25\" >T\u1eadp th\u1ec3 d\u1ee5c v\u1ec1 \u0111\u1ed9ng n\u0103ng v\u1eadt l\u00fd 10 B\u00e0i 25<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Trong v\u1eadt l\u00fd l\u1edbp 10, h\u1ecd s\u1ebd h\u1ecdc \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ki\u1ebfn \u200b\u200bth\u1ee9c quan tr\u1ecdng trong k\u1ef3 thi trung h\u1ecdc, trong \u0111\u00f3 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu l\u00e0 \u0111\u1ed9ng n\u0103ng. B\u00e0i vi\u1ebft n\u00e0y kh\u1ec9 s\u1ebd tr\u1ea3 l\u1eddi t\u1ea5t c\u1ea3 c\u00e1c l\u00fd thuy\u1ebft v\u1ec1 \u0111\u1ed9ng n\u0103ng? Bi\u1ec3u th\u1ee9c \u0111\u1ed9ng v\u00e0 k\u00e8m theo m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn n\u00e2ng cao gi\u00fap h\u1ecd d\u1ec5 d\u00e0ng hi\u1ec3u \u0111\u01b0\u1ee3c b\u00e0i h\u1ecdc.<\/p>\n<p>                        Xem t\u1ea5t c\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dong_nang_la_gi\"><\/span>\u0110\u1ed9ng n\u0103ng l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">N\u0103ng l\u01b0\u1ee3ng l\u00e0 g\u00ec? N\u0103ng l\u01b0\u1ee3ng ch\u00ednh l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 cho kh\u1ea3 n\u0103ng c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o \u0111\u01b0\u1ee3c sinh ra. Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c, ch\u00fang c\u00f3 th\u1ec3 trao \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa ch\u00fang.<\/p>\n<p dir=\"ltr\">Trong v\u1eadt l\u00fd, n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t l\u01b0\u1ee3ng b\u1ea3o t\u1ed3n, n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c sinh ra ho\u1eb7c m\u1ea5t t\u1ef1 nhi\u00ean.<\/p>\n<p dir=\"ltr\"><em>\u0110\u1ed9ng n\u0103ng l\u00e0 g\u00ec?  <\/em>\u0110\u1ed9ng n\u0103ng l\u00e0 lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng m\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 v\u00ec n\u00f3 \u0111ang di chuy\u1ec3n. Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 \u0111\u1ed9ng, n\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c v\u00e0 l\u1ef1c n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra. <\/p>\n<p dir=\"ltr\">Bi\u1ec3u t\u01b0\u1ee3ng \u0111\u1ed9ng: WD.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, \u0111\u1ed9ng n\u0103ng \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n \u0111\u1ec3 t\u0103ng t\u1ed1c m\u1ed9t v\u1eadt th\u1ec3 c\u00f3 th\u1ec3 t\u00edch nh\u1ea5t \u0111\u1ecbnh, t\u1eeb tr\u1ea1ng th\u00e1i ngh\u1ec9 \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3. Tr\u1ecdng l\u01b0\u1ee3ng c\u00e0ng l\u1edbn v\u00e0 chuy\u1ec3n \u0111\u1ed9ng c\u00e0ng nhanh, c\u00e0ng \u0111\u1ed3ng ngh\u0129a v\u1edbi \u0111\u1ed9ng n\u0103ng c\u1ee7a v\u1eadt th\u1ec3.<\/p>\n<ul>\n<li dir=\"ltr\">Bi\u1ec3u t\u01b0\u1ee3ng \u0111\u1ed9ng n\u0103ng l\u00e0 WD.<\/li>\n<li dir=\"ltr\">\u0110\u01a1n v\u1ecb \u0111\u1ed9ng l\u00e0 Jun (J).<\/li>\n<\/ul>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 \u0111\u1ed9ng n\u0103ng h\u00e0ng ng\u00e0y:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-2.jpg\" alt=\"Ng\u01b0\u1eddi H\u00e0 Lan th\u00f4ng qua c\u00e1c c\u1ed1i xay gi\u00f3 chuy\u1ec3n n\u0103ng l\u01b0\u1ee3ng t\u1eeb c\u01a1 h\u1ecdc di chuy\u1ec3n th\u00e0nh c\u00f4ng \u0111\u1ec3 c\u00f3 th\u1ec3 ch\u1ea1y m\u00e1y nghi\u1ec1n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet) \" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-4.jpg\" alt=\"\u0110\u1ed3ng b\u00e0o mi\u1ec1n n\u00fai s\u1eed d\u1ee5ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a n\u01b0\u1edbc th\u00e0nh c\u00f4ng c\u01a1 h\u1ecdc \u0111\u1ec3 c\u00f3 th\u1ec3 l\u1ea5y n\u01b0\u1edbc t\u1eeb su\u1ed1i \u0111\u1ebfn m\u00e1ng n\u01b0\u1edbc. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-3.jpg\" alt=\"C\u00e1c nh\u00e0 m\u00e1y th\u1ee7y \u0111i\u1ec7n ch\u1eb7n d\u00f2ng ch\u1ea3y, ki\u1ec3m so\u00e1t chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o ra nh\u1eefng n\u1ed7 l\u1ef1c c\u01a1 h\u1ecdc \u0111\u1ec3 l\u00e0m cho c\u00e1c tuabin c\u1ee7a m\u00e1y ph\u00e1t ch\u1ea1y. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_dong\"><\/span>C\u00f4ng th\u1ee9c \u0111\u1ed9ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Xem x\u00e9t m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng m di chuy\u1ec3n d\u01b0\u1edbi hi\u1ec7u \u1ee9ng c\u1ee7a m\u1ed9t l\u1ef1c <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-f.JPG\" alt=\"\" width=\"18\" height=\"23\"><\/p>\n<p dir=\"ltr\" style=\"text-align: left\"><em>(L\u1ef1c F kh\u00f4ng \u0111\u1ed5i v\u00e0 di chuy\u1ec3n c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng d\u1ecdc theo gi\u00e1 c\u1ee7a l\u1ef1c F)<\/em><\/p>\n<p dir=\"ltr\">Gi\u1ea3 s\u1eed khi \u0111\u1ed1i t\u01b0\u1ee3ng di chuy\u1ec3n m\u1ed9t kho\u1ea3ng c\u00e1ch, t\u1ed1c \u0111\u1ed9 c\u1ee7a bi\u1ebfn \u0111\u1ed1i t\u01b0\u1ee3ng <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/v-1.JPG\" alt=\"\" width=\"23\" height=\"37\"> \u0111\u1ebfn  <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/v2.JPG\" alt=\"\" width=\"29\" height=\"33\">V\u00ec v\u1eady, ch\u00fang t\u00f4i c\u00f3:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dong-nang.JPG\" alt=\"\" width=\"293\" height=\"125\"><\/p>\n<p dir=\"ltr\">Trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ed1i t\u01b0\u1ee3ng b\u1eaft \u0111\u1ea7u t\u1eeb tr\u1ea1ng th\u00e1i ngh\u1ec9 V1 = 0, d\u01b0\u1edbi hi\u1ec7u \u1ee9ng c\u1ee7a l\u1ef1c F \u0111\u1ea1t \u0111\u1ebfn Velocity V1 = V, ch\u00fang ta c\u00f3: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dong-nang-1.JPG\" alt=\"\" width=\"136\" height=\"59\"><\/p>\n<p dir=\"ltr\"><em>T\u1eeb hai tr\u01b0\u1eddng h\u1ee3p, ch\u00fang t\u00f4i k\u1ebft lu\u1eadn: <\/em>\u0110\u1ed9ng n\u0103ng c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m \u0111ang di chuy\u1ec3n v\u1edbi v\u1eadn t\u1ed1c c\u1ee7a V \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 khi n\u00f3 di chuy\u1ec3n, v\u1edbi \u0111\u1ed9ng n\u0103ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n b\u1edfi bi\u1ec3u th\u1ee9c:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dong-nang-3.JPG\" alt=\"\" width=\"359\" height=\"93\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">WD: l\u00e0 \u0111\u1ed9ng h\u1ecdc (J)<\/li>\n<li dir=\"ltr\">M: Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (kg)<\/li>\n<li dir=\"ltr\">V: l\u00e0 v\u1eadn t\u1ed1c (t\u1ed1c \u0111\u1ed9) c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (m\/s)<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dong_nang_cua_cac_vat_the_ran\"><\/span>\u0110\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 r\u1eafn <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong c\u01a1 h\u1ecdc c\u1ed5 \u0111i\u1ec3n, \u0111\u1ed9ng n\u0103ng c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 nh\u1ecf \u0111\u1ebfn m\u1ee9c kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 ch\u1ec9 t\u1ed3n t\u1ea1i t\u1ea1i m\u1ed9t \u0111i\u1ec3m ho\u1eb7c m\u1ed9t v\u1eadt kh\u00f4ng ph\u1ea3i l\u00e0 v\u1eadt th\u1ec3, bi\u1ec3u hi\u1ec7n c\u1ee7a \u0111\u1ed9ng n\u0103ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-cua-vat-ran.JPG\" alt=\"\" width=\"347\" height=\"95\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">M: L\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (kg)<\/li>\n<li dir=\"ltr\">V: l\u00e0 t\u1ed1c \u0111\u1ed9 (ho\u1eb7c v\u1eadn t\u1ed1c) c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (m\/s)<\/li>\n<\/ul>\n<p dir=\"ltr\">B\u1edfi v\u00ec \u0111\u1ed9ng n\u0103ng t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi b\u00ecnh ph\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 t\u0103ng g\u1ea5p \u0111\u00f4i n\u00f3 s\u1ebd c\u00f3 \u0111\u1ed9ng n\u0103ng b\u1ed1n l\u1ea7n so v\u1edbi b\u1ea3n g\u1ed1c. \u0110\u1ed9ng n\u0103ng c\u1ee7a m\u1ed9t v\u1eadt c\u00f3 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng l\u01b0\u1ee3ng theo ph\u01b0\u01a1ng tr\u00ecnh:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-cach-tinh.JPG\" alt=\"\" width=\"368\" height=\"99\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">P: l\u00e0 \u0111\u1ed9ng l\u1ef1c<\/li>\n<li dir=\"ltr\">M: l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng<\/li>\n<\/ul>\n<p dir=\"ltr\">N\u0103ng l\u01b0\u1ee3ng \u0111\u1ed9ng h\u1ecdc thu\u1ea7n t\u00fay li\u00ean quan \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng truy\u1ec1n c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 r\u1eafn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ed5i m v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng trung t\u00e2m c\u1ee7a n\u00f3 di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ee7a V, s\u1ebd b\u1eb1ng v\u1edbi:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dong-nang-cua-vat-ran-1.JPG\" alt=\"\" width=\"339\" height=\"103\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">M: l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng<\/li>\n<li dir=\"ltr\">V: t\u1ed1c \u0111\u1ed9 c\u1ee7a trung t\u00e2m<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_ly_dong\"><\/span>\u0110\u1ecbnh l\u00fd \u0111\u1ed9ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">L\u1ef1c \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi m\u1ed9t l\u1ef1c F s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-ly-dong-nang.JPG\" alt=\"\" width=\"341\" height=\"95\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-thich-dinh-ly-dong-nang.JPG\" alt=\"\" width=\"629\" height=\"107\"><\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, ch\u00fang ta c\u00f3 h\u1eadu qu\u1ea3: khi l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o, \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0y l\u00e0 d\u01b0\u01a1ng (+), \u0111\u1ed9ng n\u0103ng c\u1ee7a v\u1eadt th\u1ec3 t\u0103ng (ngh\u0129a l\u00e0 sinh v\u1eadt c\u1ee7a ti\u00eau c\u1ef1c (-)). Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean sinh v\u1eadt \u00e2m (-), \u0111\u1ed9ng n\u0103ng c\u1ee7a v\u1eadt th\u1ec3 gi\u1ea3m (t\u1ee9c l\u00e0 d\u01b0\u01a1ng t\u00ednh (+)).<\/p>\n<p dir=\"ltr\">Xem th\u00eam: N\u0103ng l\u01b0\u1ee3ng l\u00e0 g\u00ec? T\u00f3m t\u1eaft c\u00e1c bi\u1ec3u m\u1eabu v\u00e0 c\u00f4ng th\u1ee9c (d\u1ec5 hi\u1ec3u nh\u1ea5t)<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tap_the_duc_ve_dong_nang_vat_ly_10_Bai_25\"><\/span>T\u1eadp th\u1ec3 d\u1ee5c v\u1ec1 \u0111\u1ed9ng n\u0103ng v\u1eadt l\u00fd 10 B\u00e0i 25 <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 1: C\u00f3 m\u1ed9t vi\u00ean \u0111\u1ea1n n\u1eb7ng 14g v\u00e0 \u0111ang di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 400 m\/s theo h\u01b0\u1edbng ngang qua b\u1ea3ng g\u1ed7 d\u00e0y 5 cm c\u00e1ch xa 100 m. Vui l\u00f2ng t\u00ecm t\u1ed1c \u0111\u1ed9 c\u1ee7a vi\u00ean \u0111\u1ea1n sau khi th\u00e2m nh\u1eadp g\u1ed7 l\u00e0 120 m\/s. Ngo\u00e0i ra, b\u1ea1n t\u00ecm th\u1ea5y bao nhi\u00eau \u0111i\u1ec7n tr\u1edf trung b\u00ecnh c\u1ee7a b\u1ea3ng g\u1ed7 tr\u00ean vi\u00ean \u0111\u1ea1n?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn nhanh: <\/p>\n<p dir=\"ltr\">Ch\u00fang t\u00f4i c\u00f3: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-dong-nang-1.JPG\" alt=\"\" width=\"457\" height=\"98\"><\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 2: M\u1ed9t chi\u1ebfc xe tr\u1ebb em \u0111ang ch\u1ea1y v\u1edbi t\u1ed1c \u0111\u1ed9 24 m\/s v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng 1100 kg v\u00e0 phanh \u0111ang d\u1ea7n di chuy\u1ec3n. Vui l\u00f2ng t\u00ednh to\u00e1n:<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9ng c\u1ee7a xe sau khi t\u1ed1c \u0111\u1ed9 gi\u1ea3m xu\u1ed1ng c\u00f2n 10m\/s?<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u1ef1c phanh trung b\u00ecnh sau khi xe h\u01a1i h\u01a1n 60m b\u1eb1ng xe?<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn nhanh: <\/p>\n<p dir=\"ltr\">Ch\u00fang t\u00f4i c\u00f3:<\/p>\n<p dir=\"ltr\" role=\"presentation\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-dong-nang-2.JPG\" alt=\"\" width=\"361\" height=\"99\"><\/p>\n<p dir=\"ltr\">B\u00e0i t\u1eadp 3: M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m = 100g r\u01a1i t\u1ef1 do m\u00e0 kh\u00f4ng c\u00f3 v\u1eadn t\u1ed1c ban \u0111\u1ea7u. Nh\u1eadn g = 10m\/s^2<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi \u0111\u01b0\u1ee3c h\u1ecfi trong ao r\u1ea5t l\u00e2u sau khi b\u1eaft \u0111\u1ea7u r\u01a1i, \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ed9ng h\u1ecdc l\u00e0 5J?<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi \u0111\u1ed9ng n\u0103ng l\u00e0 4J, kho\u1ea3ng c\u00e1ch s\u1ebd gi\u1ea3m bao nhi\u00eau?<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn nhanh:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-dong-nang-3.JPG\" alt=\"\" width=\"325\" height=\"163\"><\/p>\n<p dir=\"ltr\">Xem th\u00eam: T\u00f3m t\u1eaft l\u00fd thuy\u1ebft c\u1ee7a Lu\u1eadt \u0111\u1ec3 b\u1ea3o t\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 ghi nh\u1edb<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng n\u0103ng m\u00e0 kh\u1ec9 chia s\u1ebb cho tr\u1ebb em. Hy v\u1ecdng r\u1eb1ng b\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u00fap h\u1ecd hi\u1ec3u \u0111\u1ed9ng n\u0103ng l\u00e0 g\u00ec v\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng th\u1ee9c li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng n\u0103ng. Vui l\u00f2ng l\u00e0m theo danh m\u1ee5c ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 c\u1eadp nh\u1eadt b\u1ea3n th\u00e2n v\u1edbi nhi\u1ec1u ki\u1ebfn \u200b\u200bth\u1ee9c th\u00fa v\u1ecb kh\u00f4ng ch\u1ec9 li\u00ean quan \u0111\u1ebfn v\u1eadt l\u00fd m\u00e0 c\u00f2n nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c!<\/p>\n<p>Ngu\u1ed3n: <a href=\"https:\/\/www.ckconitsha.com\/vn\/\">https:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong v\u1eadt l\u00fd l\u1edbp 10, h\u1ecd s\u1ebd h\u1ecdc \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ki\u1ebfn \u200b\u200bth\u1ee9c quan tr\u1ecdng trong k\u1ef3 thi trung h\u1ecdc, trong \u0111\u00f3 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu l\u00e0 \u0111\u1ed9ng n\u0103ng. B\u00e0i vi\u1ebft n\u00e0y kh\u1ec9 s\u1ebd tr\u1ea3 l\u1eddi t\u1ea5t c\u1ea3 c\u00e1c l\u00fd thuy\u1ebft v\u1ec1 \u0111\u1ed9ng n\u0103ng? Bi\u1ec3u th\u1ee9c \u0111\u1ed9ng v\u00e0 k\u00e8m theo m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-13407","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/13407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=13407"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/13407\/revisions"}],"predecessor-version":[{"id":16208,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/13407\/revisions\/16208"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=13407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=13407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=13407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}