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1-D Motion with a force in Scratch
Posted by Rhett Allain on October 1, 2008 I can’t remember how I found this, but [Scratch](http://scratch.mit.edu) is a graphical programming language developed at MIT. My kids love this. In order to make sure they don’t know more than I do, I created my own scratch program. I am sure someone from the scratch community will attack it for some reason, but I…
Physics of Linerider IV: Friction?
Posted by Rhett Allain on September 14, 2008 Friction in Line Rider Is there friction in Line Rider? Does it function as physics would expect? To test this, I set up a simple track:  Basically, a slope with a flat part to start with and to end with. Let me show you something simple before further analysis: …
Physics of Linerider III: Air Resistance
Posted by Rhett Allain on September 13, 2008 There is no air resistance in line rider. Sorry to spoil the suspense. To test for the presence of an air resistance force, a track was created that let the rider fall.  (note the markers on the side. These are used to keep track of how the origin is moving). Below is…
Physics of Linerider Part II: Scale
Posted by Rhett Allain on September 13, 2008 Scale of the Line Rider First, we assume that the line rider is on Earth and for low speeds will have a free-falling acceleration of 9.8 m/s2. Next, an arbitrary distance is selected. In this case the length of the sled is chosen to be 1 LU (Linerider Unit).  The goal will be…
The Physics of Linerider
Posted by Rhett Allain on September 13, 2008 Part I: Introduction http://linerider.com is a flash “game” in which the user can create tracks. A rider is then allowed to slide down these tracks. If you have not played this, I recommend you DON’T play it. It is very addicting and can consume many hours of your time (hours you would otherwise spend on…