Patel Hobbs

06/27/2024 · Middle School

3. Two blocks, initially sliding on a horizontal air track without friction, collide in an elastic, one-dimensional collision. Let \( P, K E \), and \( V c m \) be the total linear momentum of the blocks, the total kinetic energy of the blocks, and the velocity of the center of mass of the blocks, respectively. Consider the following statements: 1. \( P \) is the same before and after the collision. 2. \( K E \) is the same before and after the collision. 3. Vcm is the same before and after the collision. Which of the following is true? A. Only (1) is true B. Only (2) is true C. Only (1) and (2) are true D. Only (1) and (3) are true E. All three statements are true