Hang a pen by a piece of string. 1.Is the pen at rest or in motion,Hang a pen by a piece of string. 1.Is the pen at rest or in motion, explain.2.are there forces acting of the pen?explain.cut the string with a pair of scissors3.what happens to the pen?what could have caused the pen's motion?explain.place a book on the top of a table4.is the book at rest, or in motion?explain.5.are there forces acting on the book?explain.

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Answers

2016-06-23T15:05:56+08:00
At rest,yes tension force,fall on the ground
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