{"knowledge_schema": {"broad_category": "Physics \u2192 Relativity \u2192 Invariant Mass", "refinement": "This problem involves the concept of invariant mass in the context of special relativity, particularly when dealing with two particles moving at relativistic speeds.", "specific_scope": "The focus is on calculating the invariant mass of a two-particle system where each particle has a specific velocity relative to the speed of light (c).", "goal": "Determine the invariant mass of the system of two particles moving towards each other at relativistic speeds."}, "summary": "This problem pertains to the field of physics, specifically the theory of relativity, where we calculate the invariant mass of a system of two particles moving at relativistic speeds. The scenario involves two particles with mass m, moving towards each other at velocities of 0.8c and 0.6c. The goal is to find the invariant mass of the system, which is a key concept in understanding how mass behaves under relativistic conditions. The answer to this problem is 1.25m, indicating the combined mass of the system as perceived in a specific inertial frame."}