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> （8分）离地高h＝500m的空中自由落下一个小球，不计空气阻力，取g＝10m/s 2。求：（1）小球落到地面经过的时间t 1；（2）小球落地前最后1秒内的位移Δh。

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发布时间：2024-09-09

（8分）离地高h＝500m的空中自由落下一个小球，不计空气阻力，取g＝10m/s ²。求：
（1）小球落到地面经过的时间t ₁；
（2）小球落地前最后1秒内的位移Δh。

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（8分）离地高h＝500m的空中自由落下一个小球，不计空气阻力，取g＝10m/s 2。求： （1）小球落到地面经过的时间t 1； （2）小球落地前最后1秒内的位移Δh。

可能感兴趣的题目：

（8分）离地高h＝500m的空中自由落下一个小球，不计空气阻力，取g＝10m/s ²。求：
（1）小球落到地面经过的时间t ₁；
（2）小球落地前最后1秒内的位移Δh。