I'm confused on how to solve questions 4 and 5. Can anyone help?

4) A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak. (Hint: the time to rise to the peak is 12 the total hang-time.) KNOW FIND STARTING EQUATION: Vy Initial velocity: 0 Height = ? Acceleration: -9.81 9.81 x 6.25 2 5) A stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. Determine the depth of the well. KNOW FIND STARTING EQUATION