From her bedroom window a girl drops a water-filled balloon to the ground, 4.94 m below. If the balloon is released from rest, how long is it in the air?

Answer 1

Given:
s(0) = 0
v(0) = 0
s(t) = -4.94m
g = -9.8m/s²
Use the equation to solve for t.
s(t) = s(0) + v(0) t + ½ g t²