A brick is released with no initial speed from the roof of a building and strikes the ground in 1.80 s , encountering no appreciable air drag. how tall, in meters, is the building?
Kinematics is used in this problem. The mass does not matter here because the question is mass independent.
vi = 0
vf = x
d = ?
d = vi + 1/2 a t^2
d = 0 + 1/2 (9.8) (1.8)^2
d = 15.9 m (counting sig figs)
