Fran throws a rock straight upward alongside a tree. The rock rises until it is even with the top of the tree and then falls back to the ground; it remains aloft for 4 s. How tall is the tree?
The tree is 64 ft tall.
Time of ascent = Time of desecnt = 4/2 = 2 s
Let the height of the tree be ...
Neat and step-wise solution is provided.