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" Dim Lights Share a clea.nr URL: Hide Comments, Favorites, Suggested Videos, etc. There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight by asking people what makes a car difficult to push. The standard answer is that it is difficult to push because it's heavy. But heaviness is a measure of weight, the gravitational pull of the Earth attracting the car to Earth's center. When the car is pushed on a flat road, the force of gravity does not oppose the motion. Instead the resistance felt is an indication of the car's mass which determines its inertia. Inertia is the property of matter that means it tends to resist acceleration - the greater the mass, the less the acceleration for a given amount of force. Subscribe 109 videos 32,519 Like Add to Share Uploaded by 1veritasium on Feb 7, 2011 There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight by asking people what makes a car difficult to push. The standard answer is that it is difficult to push because it's heavy. But heaviness is a measure of weight, the gravitational pull of the Earth attracting the car to Earth's center. When the car is pushed on a flat road, the force of gravity does not oppose the motion. Instead the resistance felt is an indication of the car's mass which determines its inertia. Inertia is the property of matter that means it tends to resist acceleration - the greater the mass, the less the acceleration for a given amount of force. 320 likes, 14 dislikes Show more Uploader Comments ( 1veritasium ) Actually, it is the friction which is causing difficulty in moving the car. Ideally if there is no friction, whether rolling or sliding, even the slightest of the force would make the car move. You could actually be able to move the car with a push of your little finger if there is no friction at

We've discovered 50+ great tips for getting the most out of Google Docs as a student, with awesome ideas and tricks for collaboration, sharing, and staying productive.

"http://yt.cl.nr/mAjrnZ-znkY" This song differentiates between the different families of organic compounds based on the sharing of functional groups in different positions on the carbon chain.

"http://yt.cl.nr/XxKIa6Zr1NQ" Senior Research Associate at Harvard Project Zero, Ron Ritchhart shares his thoughts on the importance of creating a culture of thinking in classrooms and schools

For teachers and students, this toolkit of disaster resilience education resources focuses on both individual and community resilience, vital components to developing a shared understanding of the critical role everyone plays in developing a disaster resilient Australia. Resources are designed to be flexible to individual learning styles and are aligned to curriculum.

Connect your classroom to the world Skype is a free and easy way for teachers to open up their classroom. Meet new people, talk to experts, share ideas and create amazing learning experiences with teachers from around the world.

A place to collect, organise and share everything you like on the web.

Access your files anywhere and share with anyone

Experience WorldWide Telescope Immerse yourself in a seamless beautiful environment. From web to desktop to full dome planetarium, WorldWide Telescope (WWT) enables you to explore the universe, bringing together imagery from the best ground and space-based telescopes in the world and combining it with 3D navigation. Experience narrated guided tours from astronomers and educators featuring interesting places in the sky. You can research and import your own data and visualize it, then create a tour to share with others. A web-based version of WorldWide Telescope is also available. This version enables seamless, guided explorations of the universe from within a web browser on PC and Intel Mac OS X by using the power of Microsoft Silverlight 4.0.

SpiderScribe is an online mind mapping and brainstorming tool. It lets you organize your ideas by connecting notes, files, calendar events, etc. in free-form maps. You can collaborate and share those maps online!

Mark up websites, graphics, and photos, or start brainstorming on a blank canvas. Browse the web with your friends or make that conference call more productive than ever. No plug-ins, downloads, or firewall voodoo - it's all here, ready to go when you are. Browser-agnostic, user-friendly.