[閒聊] 主播物理是不是不太好消失
剛才外野手接球的時候
主播竟然說外野手的動能是往後退的
但是高中老師明明就告訴過我們
動能是純量 只有大小沒有方向
怎麼可以說動能往後呢
身為理化老師我無法接受呀...
請更正動量往後或是速度往後!
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