Please help me solve the following conceptual problem. Two blocks on a horizontal frictionless-track head toward each other. Block one has mass M and velocity 2V. Block two has mass 2M and velocity (-V). Suppose the blocks collide elastically, what is the velocity of the bigger block after the collision takes place? (click to see diagram)

Question

Please help me solve the following conceptual problem. Two blocks on a horizontal frictionless-track head toward each other. Block one has mass M and velocity 2V.  Block two has mass 2M and velocity (-V). Suppose the blocks collide elastically, what is the velocity of the bigger block after the collision takes place? (click to see diagram)

babyslapmafro · Answer

Before collision:
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