{"id":125,"date":"2026-02-04T16:39:53","date_gmt":"2026-02-05T00:39:53","guid":{"rendered":"https:\/\/choice.work\/?p=125"},"modified":"2026-02-10T09:43:27","modified_gmt":"2026-02-10T17:43:27","slug":"choice-log-no-1770250523-escape-velocity","status":"publish","type":"post","link":"https:\/\/choice.work\/?p=125","title":{"rendered":"Choice log no. 1770250523 &#8211; Escape Velocity"},"content":{"rendered":"<p><a href=\"https:\/\/earthhow.com\/escape-velocity-earth-closed-system\/\" target=\"_blank\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/choice.work\/wp-content\/uploads\/2026\/02\/Escape-Velocity-678x378-1.webp?w=776&#038;ssl=1\" alt=\"Escape-Velocity-678\u00d7378\" class=\"size-full aligncenter wp-image\" id=\"i-124\"><\/a><br>\nEscape velocity is the minimum speed an object needs to break free from a celestial body\u2019s gravity without further propulsion, calculated as V<sub>e<\/sub> = \u221a2GM\/r , where G is the gravitational constant, M is the body\u2019s mass, and r is the distance from its center. For Earth, it\u2019s about 11.2 km\/s (25,000 mph), while the Moon\u2019s is lower (around 2.4 km\/s) due to its smaller mass, and larger bodies like Jupiter have much higher escape velocities.<\/p>\n<h3>How it works<\/h3>\n<ul>\n<li><strong>Concept<\/strong>: It\u2019s the speed where an object\u2019s kinetic energy equals the gravitational potential energy, allowing it to travel infinitely far away.<\/li>\n<li><strong>Dependence<\/strong>: It depends on the mass (M) and radius (r) of the celestial body, not the mass of the escaping object.<\/li>\n<li><strong>Direction<\/strong>: It\u2019s a scalar, meaning the direction doesn\u2019t have to be straight up, but launching from the equator towards the east is easier due to Earth\u2019s rotation. <\/li>\n<\/ul>\n<h3>Examples<\/h3>\n<ul>\n<li><strong>Earth<\/strong>: ~11.2 km\/s (25,000 mph).<\/li>\n<li> <strong>Moon<\/strong>: ~2.4 km\/s (1.5 miles\/second).<\/li>\n<li><strong>Mars<\/strong>: ~5 km\/s (5,000 m\/s).<\/li>\n<li><strong>Jupiter<\/strong>: Much higher than Earth\u2019s due to its immense mass.<\/li>\n<\/ul>\n<h3>Calculation Formula<\/h3>\n<ul>\n<li>V<sub>e<\/sub> = \u221a2GM\/r <\/li>\n<li><strong>G<\/strong>: Gravitational constant (6.674\u00d710<sup>-11<\/sup> N \u2022 m<sup>2<\/sup>\/kg<sup>2<\/sup>)<\/li>\n<li><strong>M<\/strong>: Mass of the planet\/body (in kg)<\/li>\n<li><strong>r<\/strong>: Radius of the planet\/body (in meters)<\/li>\n<\/ul>\n<p><cite>The above information was provided by <a href=\"https:\/\/gemini.google.com\/app\" target=\"_blank\">Gemini<\/a>.<\/cite><\/p>\n<h3>es\u00b7cape ve\u00b7loc\u00b7i\u00b7ty<\/h3>\n<p>\/\u0259\u02c8sk\u0101p v\u0259\u02ccl\u00e4s\u0259d\u0113\/<br>\nnoun: <strong>escape velocity<\/strong><br>\nplural noun: <strong>escape velocities<\/strong><\/p>\n<p>    the lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.<\/p>\n<p><a href=\"https:\/\/choice.work\/?tag=escapevelocity\" class=\"tag\"><span class=\"tag-prefix\">#<\/span>EscapeVelocity<\/a><\/p>\n<nav class='o2-post-footer-actions'><ul class='o2-post-footer-action-row'><li class='o2-post-footer-action'><a href=\"https:\/\/choice.work\/?p=125#respond\" title=\"Reply\"  class=\"o2-post-reply o2-reply genericon  genericon-reply\"  data-action=\"reply\"  data-actionstate=\"default\" >Reply<\/a><\/li><\/ul><div class='o2-post-footer-action-likes'><\/div><ul class='o2-post-footer-action-row'><\/ul><\/nav>","protected":false},"excerpt":{"rendered":"<p>Escape velocity is the minimum speed an object needs to break free from a celestial body\u2019s gravity without further propulsion, calculated as Ve = \u221a2GM\/r , where G is the gravitational constant, M is the body\u2019s mass, and r is the distance from its center. For Earth, it\u2019s about 11.2 km\/s (25,000 mph), while the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[20],"class_list":["post-125","post","type-post","status-publish","format-standard","hentry","category-choice","tag-escapevelocity","author-choice"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/posts\/125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/choice.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=125"}],"version-history":[{"count":3,"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/posts\/125\/revisions"}],"predecessor-version":[{"id":128,"href":"https:\/\/choice.work\/index.php?rest_route=\/wp\/v2\/posts\/125\/revisions\/128"}],"wp:attachment":[{"href":"https:\/\/choice.work\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/choice.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/choice.work\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}