<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Tue, 21 Apr 2026 01:25:55 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/created/doyi/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Linear momentum ]]></title><description><![CDATA[1 Conservation of linear momentum: If the net external force acting on system of objects is zero, the vector sum of the momenta of the objects will remain constant. In collisions and explosions, the vector]]></description><link>http://direct.ecency.com/doyi/@doyi/linear-momentum</link><guid isPermaLink="true">http://direct.ecency.com/doyi/@doyi/linear-momentum</guid><category><![CDATA[doyi]]></category><dc:creator><![CDATA[doyi]]></dc:creator><pubDate>Sun, 20 Oct 2019 13:23:36 GMT</pubDate></item><item><title><![CDATA[Work and Energy]]></title><description><![CDATA[7 Work and Energy 50m×9.8m/s2 ×0.10 = 7.0m/s. Suppose a constant force Fx acts in the +x−direction and causes an object to move a distance of ∆x. The work-done by the force is defined as W =fx∆x. The SI]]></description><link>http://direct.ecency.com/doyi/@doyi/work-and-energy</link><guid isPermaLink="true">http://direct.ecency.com/doyi/@doyi/work-and-energy</guid><category><![CDATA[doyi]]></category><dc:creator><![CDATA[doyi]]></dc:creator><pubDate>Sun, 20 Oct 2019 13:13:33 GMT</pubDate></item><item><title><![CDATA[Laws of motion ]]></title><description><![CDATA[5 Newton’s Laws of Motion Dynamics, the study of how forces influence motion, is involved in understanding a wide range of phenomena. Newton’s first law of motion: An object at rest will remain at rest;]]></description><link>http://direct.ecency.com/doyi/@doyi/laws-of-motion</link><guid isPermaLink="true">http://direct.ecency.com/doyi/@doyi/laws-of-motion</guid><category><![CDATA[doyi]]></category><dc:creator><![CDATA[doyi]]></dc:creator><pubDate>Sun, 20 Oct 2019 12:18:12 GMT</pubDate></item><item><title><![CDATA[Kinetic energy ]]></title><description><![CDATA[1 Kinetic Energy W =1 2 kx2 = 1 2(640)(0.02)2 = 0.128J Suppose that a single constant force F acts on a particle in its direction of motion and causes it to accelerate, increasing in speed from an initial]]></description><link>http://direct.ecency.com/doyi/@doyi/kinetic-energy</link><guid isPermaLink="true">http://direct.ecency.com/doyi/@doyi/kinetic-energy</guid><category><![CDATA[doyi]]></category><dc:creator><![CDATA[doyi]]></dc:creator><pubDate>Sun, 20 Oct 2019 12:12:48 GMT</pubDate></item></channel></rss>