1. The problem statement, all variables and given/known data Lets set up the Coordinate system. Y up is Positive, X right is Positive. g is directed Downward The Incline with 45 Degree corners Accelerates in the Positive X Direction with an Acceleration A. What is the Acceleration of the Block. Answer Clue: When A = 3g Y(Second Derivative) = g 2. Relevant equations Just sums of Forces. 3. The attempt at a solution I attempted to Break down the Accelerations (I ignored Forces, because the mass of the Block is Irrelevant) I got the equation Sin(45)A - Sin(45)g should be the acceleration (I projected A and G onto the Incline), but this does not work with the answer clue. Where should I try next?