tag:blogger.com,1999:blog-74390880955700925592024-03-13T07:58:07.851-07:00Online RevisionJWhttp://www.blogger.com/profile/04633191740991225888noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7439088095570092559.post-3570363811444262562012-10-06T04:35:00.000-07:002008-11-09T19:45:27.840-08:00WelcomeHi everyone,<br /><br />Welcome to Online Revision<br /><br />The title is lame, but well... If you can, you can suggest a nicer name for me :D<br /><br />Anyway, this blog site is dedicated to consolidating some notes that we have (along with some other contributors' notes) for O levels and A levels. The objective is to achieve a light-hearted, yet informative resource site in which students can revise. Studying and learning should not be made a chore, but instead, something fun. Hopefully, we can achieve that.<br /><br />Stay tune as the site is being done up. Cheers!<br /><br /><br />Latest update:<br />All notes will be created at <a href="http://examworld.blogspot.com">http://examworld.blogspot.com</a> instead. Thanks.JWhttp://www.blogger.com/profile/04633191740991225888noreply@blogger.com0tag:blogger.com,1999:blog-7439088095570092559.post-8845455799152737122008-10-09T06:19:00.000-07:002008-10-13T08:39:12.023-07:00Kinematics<span style="color: rgb(51, 51, 255);font-size:180%;" ><span style="font-weight: bold;">Content</span></span><br /><ul><li>Speed, velocity and acceleration</li><li>Graphical analysis of motion</li><li>Free-fall</li><li>Effect of air resistance</li></ul><br /><span style="font-weight: bold;">Speed</span><br /><ul><li>Speed is the distance moved per unit time.</li><li>The SI unit of speed is metres per second (m/s)</li><li>Speed = Distance / Time</li><li>Speed = Gradient of distance-time graph</li><li>Speed is a scalar quantity; it has only magnitude, no direction</li></ul><br /><span style="font-weight: bold;">Velocity</span><br /><ul><li>Velocity is the distance moved in a given direction per unit time, or displacement per unit time.<br /></li><li>The SI unit of velocity is metres per second (m/s)</li><li>Velocity = Distance moved in a given direction / Time or Speed = displacement / time<br /></li><li>Velocity = Gradient of displacement-time graph</li><li>Velocity is a vector quantity; it has both magnitude and direction</li></ul><br /><span style="font-weight: bold;">Acceleration</span><br /><ul><li>Acceleration is the <span style="font-weight: bold;">change in velocity per unit time.</span><br /></li><li>Acceleration = Change in velocity / Time</li><li>Acceleration = (Final velocity - Initial velocity) / Time<br /></li><li>Acceleration = Gradient of velocity-time graph</li><li>Acceleration is a vector quantity; it has both magnitude and direction</li><li>The SI unit of acceleration is metres per second square (m/s²)</li></ul><br /><span style="font-weight: bold;">Distance-Time Graph</span><br /><ul><li>Speed, v = <u>Gradient</u> of the distance-time graph</li></ul><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_MpWUhDNsH98/SPNrXt0Dz-I/AAAAAAAAAXU/36V8bruvjaU/s1600-h/Kinematics1.gif"><img style="cursor: pointer;" src="http://3.bp.blogspot.com/_MpWUhDNsH98/SPNrXt0Dz-I/AAAAAAAAAXU/36V8bruvjaU/s320/Kinematics1.gif" alt="" id="BLOGGER_PHOTO_ID_5256663245250613218" border="0" /></a></div><br /><ul><li>Gradient = y / x = speed</li></ul>JWhttp://www.blogger.com/profile/04633191740991225888noreply@blogger.com0