{"id":9282,"date":"2024-05-08T16:11:20","date_gmt":"2024-05-08T16:11:20","guid":{"rendered":"https:\/\/www.fizika-online.ru\/?page_id=9282"},"modified":"2024-05-08T16:38:50","modified_gmt":"2024-05-08T16:38:50","slug":"%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b8-%d0%bf%d0%be-%d0%ba%d0%b8%d0%bd%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d0%ba%d0%b5-%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b0-%d0%ba203","status":"publish","type":"page","link":"https:\/\/www.fizika-online.ru\/?page_id=9282","title":{"rendered":"\u0417\u0430\u0434\u0430\u0447\u0438 \u043f\u043e \u043a\u0438\u043d\u0435\u043c\u0430\u0442\u0438\u043a\u0435. \u0417\u0430\u0434\u0430\u0447\u0430 \u041a203"},"content":{"rendered":"<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u0417\u0430\u0434\u0430\u0447\u0430.<\/strong><\/em> \u041a\u0430\u043c\u0435\u043d\u044c \u0431\u0440\u043e\u0441\u0430\u044e\u0442 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e \u0441\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e $v_0=20$ \u043c\/\u0441. \u0417\u0430 \u043a\u0430\u043a\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u043f\u043e\u043b\u0435\u0442\u0430 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u043a\u0430\u043c\u043d\u044f \u0443\u0434\u0432\u043e\u0438\u0442\u0441\u044f? \u041a\u0430\u043a\u043e\u0439 \u0443\u0433\u043e\u043b \u0441 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u043e\u043c \u043e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0442\u044c \u0432 \u044d\u0442\u043e\u0442 \u043c\u043e\u043c\u0435\u043d\u0442 \u0432\u0440\u0435\u043c\u0435\u043d\u0438?<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u041a\u0440\u0430\u0442\u043a\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0443\u0441\u043b\u043e\u0432\u0438\u044f:<\/strong><\/em> $v=2v_0$; $v_0=20$ \u043c\/\u0441.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u0420\u0435\u0448\u0435\u043d\u0438\u0435. <\/strong><\/em><span style=\"color: #000000;\">\u041f\u0440\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0438 \u0437\u0430\u0434\u0430\u0447\u0438 \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u043c, \u043e\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u043c \u0432 <a href=\"https:\/\/www.fizika-online.ru\/?page_id=1906\" target=\"_blank\" rel=\"noopener\">\u0442\u0435\u043e\u0440\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u043f\u0440\u0430\u0432\u043a\u0435<\/a> \u043a \u0440\u0430\u0437\u0434\u0435\u043b\u0443 &#171;\u041f\u0440\u044f\u043c\u043e\u043b\u0438\u043d\u0435\u0439\u043d\u043e\u0435 \u0440\u0430\u0432\u043d\u043e\u0443\u0441\u043a\u043e\u0440\u0435\u043d\u043d\u043e\u0435 \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u0435&#187;. <\/span><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">1. \u0420\u0435\u0448\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0430\u0447\u0438 \u043e\u0441\u043d\u043e\u0432\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0438 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u044f \u043c\u043e\u0434\u0443\u043b\u044f \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u0442\u0435\u043b\u0430 \u0432 2 \u0440\u0430\u0437\u0430. \u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043f\u043e\u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0444\u043e\u0440\u043c\u0443\u043b\u0430 \u043d\u0430\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043c\u043e\u0434\u0443\u043b\u044f \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">2. \u0412\u044b\u043f\u043e\u043b\u043d\u0438\u043c \u0447\u0435\u0440\u0442\u0435\u0436. \u0421\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u0441\u0432\u044f\u0436\u0435\u043c \u0441 \u0437\u0435\u043c\u043b\u0435\u0439. \u041a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0442\u043d\u0443\u044e \u043e\u0441\u044c $x$ \u043d\u0430\u043f\u0440\u0430\u0432\u0438\u043c \u0432\u0434\u043e\u043b\u044c \u0437\u0435\u043c\u043b\u0438, \u0432 \u0442\u043e\u043c \u0436\u0435 \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0434\u0432\u0438\u0436\u0435\u0442\u0441\u044f \u0442\u0435\u043b\u043e. \u041a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0442\u043d\u0443\u044e \u043e\u0441\u044c $y$ &#8212; \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u043e \u0432\u0432\u0435\u0440\u0445 (\u0441\u043c. \u0447\u0435\u0440\u0442\u0435\u0436).<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9272\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2024\/05\/2-3.jpg\" alt=\"\" width=\"384\" height=\"315\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2024\/05\/2-3.jpg 384w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2024\/05\/2-3-300x246.jpg 300w\" sizes=\"(max-width: 384px) 100vw, 384px\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">3. \u0417\u0430\u043f\u0438\u0448\u0435\u043c \u0444\u043e\u0440\u043c\u0443\u043b\u044b \u043d\u0430\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u0439 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043d\u0430 \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0442\u043d\u044b\u0435 \u043e\u0441\u0438<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$v_x=v_{0x}+g_x t = v_0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$v_y=v_{0y}+g_y t = gt$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">4. \u0423\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u044f \u0437\u0430\u043f\u0438\u0441\u0430\u043d\u044b, \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u0438 \u0432\u0435\u043a\u0442\u043e\u0440\u043e\u0432 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u044c \u043d\u0435 \u043d\u0443\u0436\u043d\u043e<span style=\"text-align: center;\">.<\/span><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">5. \u041c\u043e\u0434\u0443\u043b\u044c \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u0441\u0432\u044f\u0437\u0430\u043d \u0441 \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u044f\u043c\u0438 \u0441\u043e\u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u0435\u043c $v^2=v_x^2+v_y^2$. \u0421 \u0443\u0447\u0435\u0442\u043e\u043c \u0442\u043e\u0433\u043e, \u0447\u0442\u043e $v=2v_0$, \u043f\u043e\u043b\u0443\u0447\u0438\u043c<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif; font-size: 12pt; text-align: center;\">$4v_0^2=v_0^2+g^2t^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif; font-size: 12pt; text-align: center;\">$3v_0^2=g^2t^2$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif; font-size: 12pt; text-align: center;\">$\\sqrt{3}v_0=gt \\Rightarrow t=\\frac{\\sqrt{3}v_0}{g}$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif; font-size: 12pt; text-align: center;\">$t=\\frac{\\sqrt{3} \\cdot 20}{10}\\approx 3,46$ \u0441.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0427\u0435\u0440\u0435\u0437 \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u0438 \u0432\u0435\u043a\u0442\u043e\u0440\u0430 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043d\u0430 \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0442\u043d\u044b\u0435 \u043e\u0441\u0438 \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u0442\u0430\u043d\u0433\u0435\u043d\u0441 \u0443\u0433\u043b\u0430 \u043d\u0430\u043a\u043b\u043e\u043d\u0430 \u0432\u0435\u043a\u0442\u043e\u0440\u0430 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043a \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0443&nbsp;<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$tg\\alpha =\\frac{|v_y|}{v_x}=\\frac{gt}{v_0}$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$tg\\alpha =\\frac{10 \\cdot 3,46}{20}=1,73$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\alpha = arctg 1,73 \\approx 60^{\\circ}$.<\/span><\/p>\n<p><span style=\"color: #000000; font-family: georgia, palatino, serif; font-size: 12pt;\"><em><strong>\u041e\u0442\u0432\u0435\u0442:<\/strong><\/em> <span style=\"text-align: center;\">$\\approx 3,46$ \u0441 \u0438 <\/span>$\\approx 60^{\\circ}$.<\/span><\/p>\n<p style=\"text-align: left;\"><span style=\"color: #3366ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a style=\"color: #3366ff;\" href=\"https:\/\/www.fizika-online.ru\/?page_id=9196\" target=\"_blank\" rel=\"noopener\">\u0412\u0435\u0440\u043d\u0443\u0442\u044c\u0441\u044f \u043e\u0431\u0440\u0430\u0442\u043d\u043e \u043a \u0441\u043f\u0438\u0441\u043a\u0443 \u0437\u0430\u0434\u0430\u0447<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0417\u0430\u0434\u0430\u0447\u0430. \u041a\u0430\u043c\u0435\u043d\u044c \u0431\u0440\u043e\u0441\u0430\u044e\u0442 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u043e \u0441\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e $v_0=20$ \u043c\/\u0441. \u0417\u0430 \u043a\u0430\u043a\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u043f\u043e\u043b\u0435\u0442\u0430 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u043a\u0430\u043c\u043d\u044f \u0443\u0434\u0432\u043e\u0438\u0442\u0441\u044f? \u041a\u0430\u043a\u043e\u0439 \u0443\u0433\u043e\u043b \u0441 \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u043e\u043c \u043e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0442\u044c \u0432 \u044d\u0442\u043e\u0442 \u043c\u043e\u043c\u0435\u043d\u0442 \u0432\u0440\u0435\u043c\u0435\u043d\u0438? \u041a\u0440\u0430\u0442\u043a\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0443\u0441\u043b\u043e\u0432\u0438\u044f: $v=2v_0$; $v_0=20$ \u043c\/\u0441. \u0420\u0435\u0448\u0435\u043d\u0438\u0435. \u041f\u0440\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0438 \u0437\u0430\u0434\u0430\u0447\u0438 \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u043c, \u043e\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u043c \u0432 \u0442\u0435\u043e\u0440\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u043f\u0440\u0430\u0432\u043a\u0435 \u043a \u0440\u0430\u0437\u0434\u0435\u043b\u0443 &#171;\u041f\u0440\u044f\u043c\u043e\u043b\u0438\u043d\u0435\u0439\u043d\u043e\u0435 \u0440\u0430\u0432\u043d\u043e\u0443\u0441\u043a\u043e\u0440\u0435\u043d\u043d\u043e\u0435 \u0434\u0432\u0438\u0436\u0435\u043d\u0438\u0435&#187;. 1. \u0420\u0435\u0448\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0430\u0447\u0438 \u043e\u0441\u043d\u043e\u0432\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0438 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u044f \u043c\u043e\u0434\u0443\u043b\u044f\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.fizika-online.ru\/?page_id=9282\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/9282"}],"collection":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9282"}],"version-history":[{"count":3,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/9282\/revisions"}],"predecessor-version":[{"id":9286,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/9282\/revisions\/9286"}],"wp:attachment":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}