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[ 普通物理學-張寶棣 ] 單元1-3: Motion (3)
![[ 普通物理學-張寶棣 ] 單元1-3: Motion (3)](https://image1-us-west.cloudokyo.cloud/image/v1/c1/9a/60/c19a60dc-da63-448a-99ef-e4409ae15b3c/origin.jpg)