February 22, 2017

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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