(运动的描述题型)08加速度(原卷)—2021高中物理一轮复习专题训练
【加速度的定义和概念】1、甲乙两物体在一条东西方向的平直道路上运动,若以向东为正,则甲乙两物体的加速度分别为3m/s2和-4m/s2,下列说法正确的是()A.甲一定做加速运动B.乙一定做减速运动C.甲的加速度一定比乙大D.乙可能做加速运动2、甲、乙两个物体沿同一直线、同一方向运动,甲的加速度为2m/s2,乙的加速度为-3m/s2,则下列说法中正确的是( )A.两物体都做匀加速运动,乙的速度变化快B.甲做匀加速运动,它的速度变化快C.甲的加速度比乙的加速度大D.乙做匀减速运动,它的速度变化率大3、作匀加速直线运动的物体,加速度是2米/秒2,它意味着:()A.物体在任一秒末的速度是该秒初的两倍。...
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