# Project Tile Motion

1. Sep 17, 2008

### shwanky

1. The problem statement, all variables and given/known data
Standing on the ground 3.0m from the wall of a building you want to throw a package from your 1.5m shoulder level to someone in a second-floor window 4.2m above the ground. At what speed and angle should you throw the package so it just barely reaches the window?

2. Relevant equations
$$y=tan\vartheta-\frac{g}{2v^{2}cos(\vartheta)^{2}}x^{2}$$

3. The attempt at a solution
I'm not exactly sure where to begin with this problem. I tried drawing a picture of the problem but i'm still stuck. The only thing I know is that since the package just reaches the 2nd story window, the velocity Vy0=0 at some time t>0.

2. Sep 18, 2008

### H_man

Correct the vertical velocity will be zero at some time after t>0. If it just goes through the window this will be its maximum height.