1. The problem statement, all variables and given/known data A 30 kg girl standing on slippery ice catches a 0.5 kg ball thrown with a speed of 16 m/s. What then happens to the girl? 2. Relevant equations F=m*a 3. The attempt at a solution Assuming that the ice is completely smooth (zero friction) then… F = m x a F = 0.5 kg x 16 ms² = 8 kg*ms² (N) A force of 8 N is acting on the girl, but assuming there is still the force of gravity acting on her then nothing would happen since this force is not sufficient to move the girl in any direction. However, if we assume that there is no force of gravity acting on her and that air resistance is negligible then the girl would begin to move slowly at a steady velocity and unless there were any forces to stop her she would continue moving at that velocity forever?