本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学
[问答题]
Can an object have z n mblh8ce(tz)f)uf, 9 gwxi 5qucd)b.5g.* mrero velocity and nonzero acceleration at the same time? Give exampl5uir..w)qg*c bxgmd5es.
参考答案:
If
an object is at the instant of reversing direction (like an object thrown
upward, at the top of its path), it instantaneously has a zero velocity and a
non-zero acceleration at the same time.
A person at the exact bottom of a “bungee” cord plunge also has an instantaneous
velocity of zero but a non-zero (upward) acceleration at the same time.
本题详细解析:
暂无
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