本题目来源于试卷: gc physics textbook chapter 5 problems，类别为 通用国际物理
[问答题]
Explain how a runner experiences “free f- o8b b1j:xhhnall” or “apparent weightlessness” bop2sg 0unqt l. r8u7f; 2nkunwyh48 b;etween steps.u8 t h2;gn74osf k;82qupun l nbrw0y.
参考答案: When the runner
has both feet off the ground, the only force on the runner is gravity – there
is no normal force from the ground on the runner. This lack of normal force is interpreted as
“free fall” and “apparent weightlessness”.
本题详细解析:
暂无
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