Conservation of Momentum: A dinner plate falls vertically to the floor and breaks up into three pieces, which slide horizontally along the floor. Immediately after the impact, a 320-g piece moves along the +x-axis with a speed of 2.00 m/s and a 355-g piece moves along the +y-axis with a speed of 1.50 m/s. The third piece has a mass of 100 g. In what direction relative to the +x-axis does the third piece move?
A. 216.9° from the +x-axis
B. 219.8° from the +x-axis
C. 36.9° from the +x-axis
D. 39.9° from the +x-axis
E. 39.8° from the +x-axis
Answer: B
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