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Homework Statement
A baseball is seen to pass upward by a window 23m above the street with a vertical speed of 14m/s. If the ball was thrown from the street, (a) what was the initial speed, (b) what altitude does it reach, (c) when was it thrown, and (d) when does it reach the street again?
Homework Equations
v=v0+at
x=x0+v0t+1/2at^2
v^2=v02+2a(x-x0)
The Attempt at a Solution
So I guess I use x=x0+v0t+1/2at^2 for the initial speed...altitude and time?