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> 质量为m的小球，从沙坑上方自由下落，经过时间t 1到达沙坑表面，又经过时间t 2停在沙坑里．求：（1）沙对小球的平均阻力F；（2）小球在沙坑里下落过程所受的总冲量I．

问题：

发布时间：2024-09-12

质量为m的小球，从沙坑上方自由下落，经过时间t ₁到达沙坑表面，又经过时间t ₂停在沙坑里．求：
（1）沙对小球的平均阻力F；
（2）小球在沙坑里下落过程所受的总冲量I．

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质量为m的小球，从沙坑上方自由下落，经过时间t 1到达沙坑表面，又经过时间t 2停在沙坑里．求： （1）沙对小球的平均阻力F； （2）小球在沙坑里下落过程所受的总冲量I．

可能感兴趣的题目：

质量为m的小球，从沙坑上方自由下落，经过时间t ₁到达沙坑表面，又经过时间t ₂停在沙坑里．求：
（1）沙对小球的平均阻力F；
（2）小球在沙坑里下落过程所受的总冲量I．