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匀变速直线运动

> 某质点运动的υ-t图象为正弦曲线，如图所示．已知t=0时刻，质点的位移为0，从图中可以判断（　　） A．在t2时刻质点的位移最大 B．在t4时刻质点的位移最大 C．在0～t1时间内质点的加速度增大，速度增大 D．在t1～t3时间内质点的加速度方向发生了改变

问题：

发布时间：2024-09-08

某质点运动的υ-t图象为正弦曲线，如图所示．已知t=0时刻，质点的位移为0，从图中可以判断（　　）

A．在t₂时刻质点的位移最大

B．在t₄时刻质点的位移最大

C．在0～t₁时间内质点的加速度增大，速度增大

D．在t₁～t₃时间内质点的加速度方向发生了改变

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