Fall from flying airplane

Classical Mechanics Level 2

An airplane is flying horizontally at a height of $500 \text{ m}$ above the ground at a speed of $100 \text{ m/s}.$ If an object falls freely from the airplane, what is the magnitude of the speed of the object at the moment it touchs the ground?

Gravitational acceleration is $g = 10 \text{ m/s}^{2}.$