s/mt/s0S1t1S2t2s/mt/s0s/mt/s0s/mt/s0s/mt/s0s/mt/s0s/mt/s0t1t2t3s/mt/s0t1t2v/m/st/s0匀速直线运动的V-t图象是否表示静止?v1v/m/st/s0s-t图象斜率k速度vv-t图象面积s位移sV/m/st/s0102465v/m/st/s0253-2练习甲、乙两辆汽车由同一地点出发沿水平直路到达同一目的地,这个过程的s-t图象如图所示,可以确定:s/mt/s0A:甲乙两辆汽车同时出发B:甲车在中途停了一段时间C:乙车在中途停了一段时间D:甲比乙更早到达目的地CDCD乙甲t1t2s/mt/s0s/mt/s0s/mt/s0s/mt/s0