Re: [問題] 正手攻純撞
借這個標題問一下
我們常常在說球的「質量」,或說「球質的輕重」
但我始終不懂這是什麼意思
因為如果我們分析被擊出的球
不就只有 速度、旋轉、方向(弧度) 這三種要素嗎?
好比說有人跟某高手對練撞擊,覺得他的球不特別快但很重
既然撞擊應該不太有旋轉,那所謂的「重」又是什麼造成的?
感謝各位解惑!
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