Physics
posted by Sangita .
A 3.79 kg ball is dropped from the roof of
a building 163.8 m high. While the ball is
falling to Earth, a horizontal wind exerts a constant force of 11.5 N on the ball. How long does it take to hit the ground?
The acceleration of gravity is 9.81 m/s2 .
Answer in units of s.

The dynamics of the horizontal problem have nothing to do with the falling problem in the vertical direction.
The mass of the ball is also irrelevant.
This is simply something falling 163.8 meters, period.
163.8 = (1/2)(9.81) t^2
solve for t
Perhaps later there is a part two where you will be asked how far from a point directly under the drop the ball lands, but that has not been asked yet.