本题目来源于试卷: Physics Unit6: Work and Energy，类别为 国际高中通用物理
[单选题]
An arrow of mass 20 g is stw)*zqu:n, i ,l,biyhhot hnpc l /)zyk2zmqu:3. worizontally into a bale of hay, striking the hay with a velocity of 60 m/s. It penetrates a de:). z3qcpmzynw ku/2lpth of 20 cm before stopping. What is the average stopping force acting on the arrow?
A. $45 \; N$
B. $90 \; N$
C. $180 \; N$
D. $360 \; N$
参考答案: C
本题详细解析:
暂无
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