What Is the Maximum Height Reached by a Falling Brick?

[iMAGICIALoTV]

A load of bricks is being lifted by a crane at a velocity of 5 m/s when one brick falls off 6m above the ground. What is the greatest height the brick reaches above the ground?

How do you solve it?

The attempt at a solution
Since it fell of 6 meters above the ground, the greatest height it reached was 6 meters.

But I'm not sure. Am I missing something?

 

[voko]

What velocity did the brick have just before it separated?