本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
08.14: A particle continuousl w*or lu1 lmb6btg 8; zrw-n,/myxet52y mov 1fquflt4ms sg- :8 lv-es in a circular path at constant speed in a counter- clockwise direction. Consider a time interval during which l8u4q:m -ff t1ssglv-the particle moves along this circular path from point P to point Q. Point Q is exactly half-way around the circle from Point P.
What is the direction of the average velocity during this time interval?
 
A.
B.
C.
D.
E.
参考答案: B
本题详细解析:
暂无
| 
