Baseball hit at 30 m/s and 30° hits window 12 m high

[seraphimhouse]

Homework Statement

After you hit a baseball, it flies into a window across the street. The baseball leaves your bat at a distance 1m above the ground, and the window is 12 m above the ground. The ball leaves your bat with a velocity of 30 m/s at 30 degrees.

How long was the ball in the air? Note: if your solution contains two roots, explain the meaning of each.

Homework Equations

Y = Yo + volt - 1/2gt^2

The Attempt at a Solution

With that formula in #2. Vo = 0 m/s so Y = -1/2gt The magnitude of that gives me 3.06 s, but that does not correspond to the answer in the back of the book

 

[BishopUser]

Your attempted solution is not very detailed. Think about the meaning of each variable in the equation. You assumed Vo to be zero, but you know that stands for the initial velocity, right? Initial velocity of the ball is obviously not 0. Also Yo stands for initial height.