本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion,类别为 通用国际物理
[单选题]
Suppose that a car traveling to the West (-x directionsh;jf5z*zdgu/ p0 y,19yyth s ) begins to .7l;j3s ock.apcfa1oslow down as it approachespal; k.7 j3ao c.f1ocs a traffic light. Make a statement concerning its acceleration.
A. The car is decelerating, and its acceleration is positive.
B. The car is decelerating, and its acceleration is negative.
C. The acceleration is zero.
D. A statement cannot be made using the information given.
参考答案: A
本题详细解析:
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