Step-by-step explanation:
The acceleration due to gravity on the moon acting on the object is one sixth of the acceleration due to gravity acting on the object on the earth.

Here, g' is the acceleration due to gravity on the moon and g is the acceleration due to gravity on the earth.
Therefore, the force of gravity on moon is less in comparison to the force of gravity on the earth. The vertical acceleration acting on the ball on the moon is less. The ball curves down in both cases.
But the ball would curve down more sharply on the earth as compared to the moon.