本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理
[单选题]
A 2.0-kg softball is pit-qtt j9 d8hgo2/p zs-o4l.lqqched zx+ vy;/gnan93 h xf5zym(3bh to you at 20 m/s. You hit the ball back along the same path, and at the same speed. I3by+h9znznv gy; x(ha/5 3f xmf the bat was in contact with the ball for 0.10 s, what is the magnitude of the average force the bat exerted?
A. zero
B. $40 \; N$
C. $400 \; N$
D. $800 \; N$
参考答案: D
本题详细解析:
暂无
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