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Unformatted text preview: circle is small i v r f v r f v r i v r v r r v a t v a r s v v v v s t 2 = = = s Approximate circular motion Each part of every 2D path can be approximated by a part of a circle This lets you estimate the component of the acceleration Where it curves fast, r is small, and v 2 /r is large; when slow, its small r eff r eff Physics student Joe is watching his friend Sandy depart from the train station. As the train pulls out of the station at a constant speed, Sandy drops a farewell package out the window. Sandy sees the farewell package drop straight to the ground beneath her hand Joe sees the package moving to the right while it falls Who is correct? 1. Sandy 2. Joe 3. Both Sandy Joe...
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 Fall '07
 Evrard
 Physics

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