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]
05.02: A pebble is dropped from a high verticaf98eosob v:l 7l cl9 vn5jo4t* qr .lt:au4p2 uz2znxbr9m/xu-yoiff. The collision of the pebble with the ground below is seen 14xoq*2yz/op jtlb2x9 4 -nunu5v rra9zut :m..50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.
A. 10 m/s
B. 15 m/s
C. 48.6 m/s
D. 100.4 m/s
E. 343 m/s
参考答案: B
本题详细解析:
暂无
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