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Tag: 缩手
为什么接球会痛?探秘动量之谜
Posted by:
sunxin
in
公开课
3 months, 4 weeks ago
当一颗棒球和一颗乒乓球以几乎相同的速度向你飞来时,你知道接住它们的感觉完全不同。接棒球会痛,而乒乓球则轻飘飘的。但你有没有想过,为什么会这样呢?
Tags:
动量
,
棒球
,
乒乓球
,
质量
,
速度
,
牛顿第二定律
,
净力
,
动量变化
,
缩手
,
疼痛
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