From the top of a building of height h = 100 m I throw a stone up with velocity 10 m/s. What is
the maximum height it reaches, and when does this occur? How many seconds does it spend on
its way down between h = 50 m and h = 0 m? What is its velocity when h = 50 m? If, while the
stone is airborne, an earthquake opens up a hole 50 m deep in the ground, when and with what
speed will the stone hit the bottom?

There are answers but I would like if someone would like to work together and explain each process.

Question

From the top of a building of height h = 100 m I throw a stone up with velocity 10 m/s. What is
the maximum height it reaches, and when does this occur? How many seconds does it spend on
its way down between h = 50 m and h = 0 m? What is its velocity when h = 50 m? If, while the
stone is airborne, an earthquake opens up a hole 50 m deep in the ground, when and with what
speed will the stone hit the bottom?

There are answers but I would like if someone would like to work together and explain each process.