A Ball is dropped from rest from a height of 52 meters.

Q1) List the known variables (yo, yf, Vo, Vf, a, and t) for the ball to travel to the ground. If you don't know a value you may write ?

Q2) Give the appropriate equation to find the time required for the ball to hit the ground and for the final velocity of the ball just before it hits the ground. I don't want numbers yet.

Q3) Find the time it takes the ball to fall to the ground and the final velocity just as it hits the ground. I want numbers now.