UAC383AE01弃旧怜新

发布时间:2020-03-03
级全面的物理公式!!!很有用的说~~~(按照咱们的物理课程顺序结的)­
    1)匀变速直线运动­
    1.平均速度V平=s/t(定义式)2.有用推论Vt2-Vo2=2as­
    3.中间时刻速度Vt/2=V平=(Vt+Vo)/24.末速度Vt=Vo+at­
    5.中间位置速度Vs/2=[(Vo2+Vt2)/2]1/26.位移s=V平t=Vot+at2/2=Vt/2t­
    7.加速度a=(Vt-Vo)/t{以Vo为正方向,a与Vo同向(加速)a>0;反向则a<0}­
    8.实验用推论Δs=aT2{Δs为连续相邻相等时间(T)内位移之差}­
    注:­
    (1)平均速度是矢量;­
    (2)物体速度大,加速度不一定大;­
    (3)a=(Vt-Vo)/t只是量度式,不是决定式;­
    2)自由落体运动­
    1.初速度Vo=02.末速度Vt=gt­
    3.下落高度h=gt2/2(从Vo位置向下计算)4.推论Vt2=2gh­
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