Momentum: Two air track carts move along an air track towards each other. Cart A has a mass of 450 g and moves toward the right with a speed of 0.850 m/s. Cart B has a mass of 300 g and moves toward the left with a speed of 1.12 m/s. What is the total momentum of the two-cart system?
A. 0.047 kg ? m/s toward the right
B. 0.719 kg ? m/s toward the right
C. 0.719 kg ? m/s toward the left
D. 0.750 kg ? m/s toward the right
E. 0.750 kg ? m/s toward the left
Answer: A
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