일반물리학 1 — Center of Mass and Linear Momentum: Problem 63

63 Block 1 of mass \(m_1\) slides along a frictionless floor and into a one-dimensional elastic collision with stationary block 2 of mass \(m_2 = 3m_1\). Prior to the collision, the center of mass of the two-block system had a speed of 3.00 m/s. Afterward, what are the speeds of (a) the center of mass and (b) block 2?