It is easier by approximately a factor of 6. The force needed to throw an object at a given speed would be the same.
Work Step by Step
The acceleration due to gravity on the Moon is about one-sixth what it is on Earth. The object is easier to lift straight up on the moon because it weighs one-sixth as much. You exert a vertical force to oppose the weight. On the other hand, when throwing an object horizontally, the force needed to accelerate it horizontally is proportional to the object’s mass, which does not change.