My inference is that the water molecules are moving up and down. I don't know for sure but i'm usually correct.
v = 
and
a = 
We have acceleration and velocity so:
3 = 
88.3 = 
In the acceleration equation we can isolate for v and then plug it back into the other equation to solve...
So...


Divide by three and
t = 29.4 s
All you need to do is find what location you need and look it up and see if you get the right answer bruh
Answer:


Explanation:
We can start from the known formula:

so we can write, since we want the initial velocity in terms of the ball's displacement, its acceleration in the vertical direction, and the elapsed time:

and for our values we have:
