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 cad: y3uko;e 0kmo :r1xliff with no horizontal vql-kde j.:(bs-7(* gjx gnmrgelocity. It lands 6.0 s later with a veloci rjxs( ngm.d(-* g 7:gqjelkb-ty 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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