Two tall buildings face each other and are at a distance of 180 m from each other. With what velocity must a ball be thrown horizontally from a window 55 m above the ground in one building, so that it enters a window 10.9 m above the ground in the second building ?

Explanation

To solve the problem step-by-step, we will follow these steps:

### Step 1: Understand the Problem
We have two buildings facing each other, with a distance of 180 m apart. A ball is thrown horizontally from a height of 55 m above the ground in one building and needs to reach a window that is 10.9 m above the ground in the other building.

### Step 2: Calculate the Vertical Distance
First, we need to find the vertical distance the ball will fall. The height from which the ball is thrown is 55 m, and it needs to reach a height of 10.9 m.

...