How much time does it take for the ball to hit the grouns

It is necessary to know that the gravity of the earth accelerates objects at a rate of 9.8 meters per second squared and then use the laws of gravitation formulated by Isaac Newton

The distance that an object travels under constant acceleration is given by the formula:

   distance = 1/2 × acceleration × time2 + intial speed × time

The initial speed is zero because the balls are dropped and not thrown. Therefore, we can solve for time:

   time2 = (2 × distance) / acceleration

Substituting distance = 54 meters and acceleration = 9.8 meters/second2, we get

   time2 = (2 × 54 meters) / (9.8 meters/second2) = 11.0 seconds2

The square root gives:

   time = 3.3 seconds

the reason is because the moon has some form of gravity, and that gravity pulls the ocean tides.