本题目来源于试卷: Impulse and momentum，类别为 美国物理杯赛(Physics Bowl)
[单选题]
05.13: A bat striking a 0.125 kg-baseball isw 97+/6ms4wml m shpdm in c s-hrw*+vmcsi .7 6ejcontact with the ball for a time of 0.03 seconds. The ball travels in a straight line as it approaches and then leavsm+hwc*r. j-7c ies6ves the bat. If the ball arrives at the bat with a velocity of 4.5 m/s and leaves with a velocity of-6.5 m/s, what is the magnitude of the average force acting on the ball?
A. 8.33 N
B. 18.75 N
C. 27.08 N
D. 45.83 N
E. 458 N
参考答案: D
本题详细解析:
暂无
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