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> (6分) 质量为5.0kg的物体，从离地面36m高处，由静止开始加速下落，经3s落地，试求： ①物体下落的加速度的大小； ②下落过程中物体所受阻力的大小。（g取10m/s 2）

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发布时间：2024-09-08

(6分) 质量为5.0kg的物体，从离地面36m高处，由静止开始加速下落，经3s落地，试求：
①物体下落的加速度的大小；
②下落过程中物体所受阻力的大小。（g取10m/s ²）

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