1. The problem statement, all variables and given/known data Brick is sliding off a roof, starts at the peak of the roof (7.0 m above ground), slides down roof with kinetic friction value of 0.28, very edge of roof is 4.0 m above ground. Where does the brick land on the ground? Please see image - http://imgur.com/wNdtlWD 2. Relevant equations 3. The attempt at a solution I attempted the solution by: drawing force diagram of brick (@ = angle of incline, 30 degrees) which gives the acceleration down (acceleration down the roof = positive direction) the roof by: ma = mgsin@ - frictional force ma = mgsin30 - 0.28 Now should I just continue to solve for the acceleration and then treat this as a projectile? If so, can someone walk me through it? Thanks!