本题目来源于试卷: gc physics textbook chapter 4 problems，类别为 通用国际物理
[问答题]
If you walk along a log floating lbwga1yj9vj ,bmt/):lae;m:w * l8kw2g byj 8on a lake, why doe5 z7it ln-ojy1s the log move in the opposite direction?7t1zi 5o-nylj
参考答案:
When you try to walk east, you push on the ground (or on the log in this case) with a westward force. When you push westward on the massive Earth, the Earth moves imperceptibly, but by Newton’s 3rd law there is an eastward force on you, which propels you forward. When walking on the log, the relatively light and unrestricted log is free to move, and so when you push it westward, it moves westward as you move eastward.
本题详细解析:
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