I tried exactly that...but no avail...
Well you can say when the ball reaches the top...and starts to fall you can do the following..
Initial V= 0 m/s
A= -10m/s/s
but that's it..
Still t and delta x are unknown...
Homework Statement
At the top of the building that's 65m high, a guy throws a ball upward.
The ball comes back down and hits the ground in 4 seconds.
A)What is the initial velocity when the guy threw the ball?
B)What is the highest height of the ball?
C)At what time does the ball comes...