本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.11: A 5.00 kg b mf hd8ua-(nb9lock slid ei(k8 3f u72.ko5g/mprwe ;1xbflmmc es with uniform acceleration on a horizontal surface for 5.00 s. The block’s kinetic energy strictly decreases from 50.0 J to 20.0 J in this mgkew5rif3k cxm7bm/l.12p eouf;(8time.
What is the average speed of the block during the motion described?
A. 7.00 m/s
B. 3.74 m/s
C. 3.65 m/s
D. 2.65 m/s
E. 2.58m/s
参考答案: C
本题详细解析:
暂无
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