牛顿第二定律(一)内容摘要:
2221 tas 222tsa 结论: 重新演示 比较以上两个实验,得: 212aa MmgMFa 1 MmgMFa222∴ ∴ ∝ a∵ M1当 F一定时, 1:瞬时性:加速度和力的关系是瞬时对应, a与 F同时产生,同时变化,同时消失; 2:矢量性:加速度的方向总与合外力方向相同; 3:独立性(。牛顿第二定律(一)
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