Hello, can someone explain to me this question: A woman holding a large rock stands on a frictionless, horizontal sheet of ice. She throws the rock with speed Vo at an angle α above the horizontal. Consider the system consisting of the woman plus the rock. Is the momentum of the system conserved? Why or why not? Is any component of the momentum of the system conserved? Again, why or why not? The way I understand it is there is no loss in momentum since there are no external forces. No?