A 0.72 kg rock is projected from the edge of
the top of a building with an initial velocity of
11.2 m/s at an angle 61◦ above the horizontal.
Due to gravity, the rock strikes the ground at
a horizontal distance of 13.5 m from the base
of the building.
How tall is the building? Assume the
ground is level and that the side of the build-
ing is vertical. The acceleration of gravity is
9.8 m/s2 .
Answer in units of m
the top of a building with an initial velocity of
11.2 m/s at an angle 61◦ above the horizontal.
Due to gravity, the rock strikes the ground at
a horizontal distance of 13.5 m from the base
of the building.
How tall is the building? Assume the
ground is level and that the side of the build-
ing is vertical. The acceleration of gravity is
9.8 m/s2 .
Answer in units of m