Please help me A stone is thrown straight upward, slightly out from the corner of the roof of a building. The initial upward speed of the stone is 20 m/s as it leaves the hand of the thrower. Assume that the stone is 50.0 m above the ground when it is released.
Assume that the initial position of the stone is at y = 0 and that positive y is up
Find the following:
1. The time needed to reach max height
2. The max height
3. The time needed to get back to initial height
4. The velocity of the stone in #3
5. The height of the stone at 5 seconds
6. The velocity of the stone just as it hits the ground