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]
A ball is thrown straight up, reaches s92 ycuyum vd0tl+uay;dz6c6i/ 0le, a maximu(kk .zc2wysqb1 f.vg+m height, then falls to its initial height. Make a statement about the direction of the v yc(. q1wvsb.gkkf2+zelocity and acceleration as the ball is coming down.
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 point downward.
参考答案: D
本题详细解析:
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