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Explore the science of car crashes at classroom.iihs.org Featured Product Newton’s Cradle is a popular device that shows the energy transfer between moving spheres and a group of stationary spheres. Many students have seen this, but you should also have it in your collection of physics toys. The first demo shown is one sphere swinging into the group and then one swinging out from the group. The presenter explains that this is an example of the conservation of energy. Pause the video and write the following equations for this interaction on your board: KE = ½ m v2    +... read more