本题目来源于试卷: Physics Unit7: Linear Momentum,类别为 通用国际物理
[单选题]
Two identical 1500-kg cars are movim+h l+ly8iq,ya6emjf 5l002titlm +bng perpendicular to each other. One moves w642)z(bc 5a doimqhdtith a speed of 25 m/s due north and the other mo qt5c(bmza )od4d 26ihves at 15 m/s due east. What is the total momentum of the system?
A. $4.4 \times 10^{4} \; kg \cdot m/s$ at $31^{\circ}$ N of E
B. $4.4 \times 10^{4} \; kg \cdot m/s$ at $59^{\circ}$ N of E
C. $6.0 \times 10^{4} \; kg \cdot m/s$ at $31^{\circ}$ N of E
D. $6.0 \times 10^{4} \; kg \cdot m/s$ at $59^{\circ}$ N of E
参考答案: B
本题详细解析:
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