Final answer:
The question pertains to calculating the acceleration magnitude of a block system using Newton's Second Law of Motion. Mass of the blocks, forces, and system specifics are required for an accurate computation.
Step-by-step explanation:
The question appears to be related to Newton's Second Law of Motion and dynamics, specifically applying to a system of blocks where one block has a cat on top and the other block is set into motion. The acceleration magnitude of the system or individual blocks would depend on the forces acting on them and their masses. Exact details of the original setup and additional information such as mass of the blocks, friction, and any other forces acting on the system are needed to accurately determine the acceleration.