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 a ball is thrown str6e pgnm ;gzt.40 *8; ywcqt tl)q1aeataight up, reaches a maximum height,zk:q mj xt0h59u7vf6 9jqfdc 1 then falls to its initial height. Make a statement aboutj0f dqq7 9j h6v:xu5c9 mk1zft the direction of the velocity and acceleration as 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:
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