If a overhand volleyball is served with top spin at 56 m/s and the court is 18 meters long and 9 meters wide and the net is 2.24 meters above the center of the court how long would it take for the ball to to make it over the net into the back left hand corner?

Wow, Can you really serve a volleyball at 125mph?

The question is really badly worded, how are you hitting the ball? Diagonally or some other way? Do you want the time for the ball to hit the ground in the top left corner? How high are you serving the ball from? Are you assuming it just grazes the top of the net?

What level of physics is this? Top spin is very complicated to factor in.