{"id":1119,"date":"2017-02-05T16:53:52","date_gmt":"2017-02-05T21:53:52","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=1119"},"modified":"2017-02-04T17:29:14","modified_gmt":"2017-02-04T22:29:14","slug":"math-9-lesson-2-spring-2017-252017","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2017\/02\/05\/math-9-lesson-2-spring-2017-252017\/","title":{"rendered":"Math 9, Lesson 2, Spring 2017, 2\/5\/2017"},"content":{"rendered":"<p>We start the new chapter on vectors.<\/p>\n<p>While a scalor is a quantity that has only magnitude, a vector is a quantity that has both magnitude and direction. We usually use directed line segment to represent a vector. The direction of the line segment, indicated by an arrow, represents the direction of the vector, and the length of the line segment represents the magnitude of the vector.<\/p>\n<p>Two vectors are equal if they have equal magnitude and are in the same direction.<\/p>\n<p>For vector additions, we study the triangle law and parallelogram law of vector additions.<\/p>\n<p>Homework:<\/p>\n<p><a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2017\/02\/WorkbookP31.pdf\" target=\"_blank\">Page 1<\/a>, <a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2017\/02\/WorkbookP32.pdf\" target=\"_blank\">Page 2<\/a>, <a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2017\/02\/WorkbookP35.pdf\" target=\"_blank\">Page 3<\/a>, <a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2017\/02\/WorkbookP36.pdf\" target=\"_blank\">Page 4<\/a><\/p>\n<p>Workbook P 31, #1, #2, #3, #4, #5, #12, #15.<\/p>\n<p>Answers to last week&#8217;s homework: <a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2016\/11\/AnswersRevisions6789.pdf\" target=\"_blank\">Answers<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We start the new chapter on vectors. While a scalor is a quantity that has only magnitude, a vector is a quantity that has both magnitude and direction. We usually use directed line segment to represent a vector. The direction of the line segment, indicated by an arrow, represents the direction of the vector, and [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[4,20,19,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1119"}],"collection":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/comments?post=1119"}],"version-history":[{"count":3,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1119\/revisions"}],"predecessor-version":[{"id":1140,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1119\/revisions\/1140"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=1119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=1119"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=1119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}