A brick is thrown horizontally off the top of a building at 7 m/s. If the building is 31m tall, how far from the base of the building will the brick land.

Answer 1

time for the brick to fall 31 m
31=1/2 9.8 t^2 in the vertical
t=sqrt(62/9.8)

how far horizontally?
d=7*t

Answer 2

Where is the 62 coming from?

Answer 3

2*31