Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion (id:

本题目来源于试卷: Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
94.03: A ball is thrown off a high cliff with no horizontal velocity. It x3uace dua566 tj7ji 4lands yxxfh.kl (n 1;4k:o a2x+*p nwr1bcmg6.0 s later with a velocam1w (lkn+p*.hb4xn:;o x2rx1fykc gity of 40 m/s. What was the initial velocity of the ball?

A. 100 m/s up
B. 20 m/s up
C. 0
D. 20 m/s down
E. 100 m/s down


参考答案:  B


本题详细解析: 暂无

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