Daily survey results - Question related to Prob. 3/207

As all of you observed, momentum is conserved for A and B together.

Momentum is not conserved for A or B individually due to the impact force (impact force is an internal force for A and B together, and consequently momentum is conserved for A&B).

Energy is not conserved for neither A, B nor A&B. Energy is lost by A and gained by B. As a system, energy is not conserved for A&B since they stick (e = 0).

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