Problem: You are standing on the ground 3.3m from a building; you want to throw a package from your 1.4m shoulder level to someone in a window 3.6m above the ground.

Part A: At what speed should you throw the package so it just barely clears the windowsill?

Part B: At what angle should you throw the package so it just barely clears the window sill?

Please clarify the equations and steps are used to get the solution. Thanks!