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December 18, 2014

Homework Help: phsyics

Posted by Jacky on Monday, February 27, 2012 at 12:50am.

A brick of mass 1.5 kg slides down an icy roof inclined at 30.0 with respect to the horizontal.

(a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 1.75 m away? Ignore friction.
m/s ?

(b) Redo part (a) if the coefficient of kinetic friction is 0.09.
m/s ?



Also on this one I don't know how to begin am lost! Please help thnks

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