A 110 kg ice hockey player skates at 3.0 m/s toward a railingat the edge of the ice and then stops himself by grasping therailing with his outstretched arms. During this stopping processhis center of mass moves 30 cm toward the railing.
a.) What is the change in the kinetic energy of his center ofmass during this process?
b.) What average force must he exert on the railing?