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[" A body is projected up a rough inclin...

[" A body is projected up a rough inclined plane trom the bottom with some velocity.It trave "],[" foline and then returns back.If the time of ascent is "t" ,and time of descent is "t_(0)" ,then "],[[" (1) "t_(0)=t_(4),(2)t_(0)>t," (4) data insurficiant "]]

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