A coin is dropped from rest into a well with water 45.0m below the hand that drops the coin.

A) How much time passes between the release of the coin and its contact with the water?
B)How fast will the coin be going when it lands in the pool?
C)How long after the release of the coin must the dropper wait to actually hear the sound of the water? Take the speed of sound to be v=335 m/s.

How can I find the answer to these questions without using Kinematics?

You have to consider the time going down, and the time for the sound to come up.

Remember the time after the release of the coin will be the sum of these two times. I will be happy to critique your thinking or work.