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]
13.26: An object movi*4bgr6) k2o,. af bwk3rhm odyng only toy *uyz5r9nql ,z8g -j,x4. rhusgn;sd the right completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip d.yn; zuus n*j9s -48h,z gqxyr 5rlg,is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8.0 seconds of stage II?
A. $2.25\;m/s^2$
B. $2.50\;m/s^2$
C. $4.00\;m/s^2$
D. $6.25\;m/s^2$
E. $8.50\;m/s^2$
参考答案: B
本题详细解析:
暂无
| 
