Ch7 - Unit 5 - MCQ and FRQ (1) Name 1. Block Y Block X Block X and Block Y are tied together by a rope. The system containing Block X and Block Y is dropp above Earth's surface in the orientation shown in the figure. Block Y has a larger mass than Block Which of the following claims is correct regarding the momentum of the system containing only Block and the system that contains Block X and Block Y? A The system containing Block X is an open system, and the system of both blocks is an open system. B The system containing Block X is an open system, and the system of both blocks is a closed system. C The system containing Block X is a closed system, and the system of both blocks is an open system. D The system containing Block X is a closed system, and the system of both blocks is a closed system