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Becky Stern is a Content Creator at Autodesk/Instructables, and part time faculty at New York’s School of Visual Arts Products of Design grad program. Making and sharing are her two biggest passions, and she's created hundreds of free online DIY tutorials and videos, mostly about technology and its intersection with crafts. Find her @bekathwia on YouTube/Twitter/Instagram.

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December 3rd, 2008 4

Popular Science’s Adam Weiner points out this entertaining example of Newton’s First Law of Motion, “a body continues to maintain its state of rest or of uniform motion unless acted upon by an external unbalanced force”. In this case, meaning those carts wanted to stay where they were.