A brick slips from the top of a roof as shown in the figure below. The roof is 
long and is inclined at an angle 
to the horizontal. The height of the outer wall of the house is 
and the coefficient of friction between the brick and the roof is 
.
Brick on the roof
What external forces act on the brick? Draw the forces and name them.
With what acceleration does the brick slide on the roof?
With what speed does the brick slide off the roof?
How long does it take the brick to fall to the ground after slipping off the roof?
Where does the brick fall to the ground?
With what speed and at what angle with respect to the horizontal does the brick fall to the ground?
of the brick and
with which the roof acts on the brick.
.
.
.
.
and 
respectively.
