Our hapless hero has once again gotten himself into trouble on the frictionless ice

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Our hapless hero has once again gotten himself into trouble on the frictionless ice. This time he has somehow acquired a constant velocity towards a region of thin ice; if he cannot find a way to stop he will slide into the region of thin ice, break through the ice, and fall into the freezing water. Our hero finds himself going North at 35.0 cm/s. Luckily, he has his physics book with him as he is sliding on the ice.

(b) The mass of our hero is 56.0 kg, and the mass of his physics book is 2.24 kg. What is the total momentum of the system of particles consisting of the book and our hero combined as they are slipping across the ice together BEFORE our hero throws his physics book? Give your answer in kg·m/s.

(c) No matter in which direction our hero decides to throw his book, what is the total momentum of the system of particles consisting of the book and our hero combined as they are slipping across the ice immediately AFTER the thrown physics book leaves our hero's hand? HINT: Use the Principle of Conservation of Momentum.