本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 国际高中通用物理
[单选题]
Suppose a ball is thrown m -o,x7 +(1:khvbr mpuauh7ma je -uj5straiy*b cc:xp b**d6q9f1 pxw5zl eght up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as* *59xbd6cxeyp :pcl1q f*wbz the ball is going up.
A. Both its velocity and its acceleration point upward.
B. Its velocity points upward and its acceleration points downward.
C. Its velocity points downward and its acceleration points upward.
D. Both its velocity and its acceleration points downward.
参考答案: B
本题详细解析:
暂无
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