A 60 kg rower is paddling a 30 kg canoe with a 2 kg paddle at a constant speed of + 10 m/s. If she loses her grip on the paddle and it flies backward with a velocity of - 20 m/s, what is the final momentum of the boat and rower?
A) + 10 kg-m/s
B) + 10.7 kg-m/s
C) + 960 kg-m/s
D) + 975.2 kg-m/s
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