A ball rolls off the edge of a horizontal table top 4 m high. If it strikes the floor at a point 5 m horizontally away from the edge of the table, what was its speed at the instant it left the table?

Explanation

To solve the problem of a ball rolling off the edge of a horizontal table and striking the floor, we will break it down into steps.

### Step 1: Analyze the vertical motion
The ball falls from a height of 4 meters. We need to determine how long it takes to hit the ground. We will use the second equation of motion for vertical motion:

\[ s_y = u_y t + \frac{1}{2} a_y t^2 \]
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