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> 从高地面H高处投出A、B、C三个小球，使A自由下落，B球以速率V水平向右抛出，C球以速率3V水平向左抛出，设三个小球落地时间分别是t A、t B、t C，空气阻力不计，则下列说法正确的是（　　） A．tC＞tB＞tA B．tC=tB＞tA C．tC＜tB＜tA D．tC=tB=tA

问题：

发布时间：2024-09-11

从高地面H高处投出A、B、C三个小球，使A自由下落，B球以速率V水平向右抛出，C球以速率3V水平向左抛出，设三个小球落地时间分别是t _A、t _B、t _C，空气阻力不计，则下列说法正确的是（　　）

A．t_C＞t_B＞t_A B．t_C=t_B＞t_A C．t_C＜t_B＜t_A D．t_C=t_B=t_A

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