如图为某同学探究滑块运动规律的v-t图象．由图可知，滑块的初速度大小为______m/s，在0～1s内做______（填“匀速”或“匀加速”）直线运动，在2s末的速度大小为______m/s．
由速度时间图线可知，滑块的初速度大小为1m/s，在0～1s内，速度随时间均匀增加，做匀加速直线运动，2s末的速度大小为2m/s．
故答案为：1，匀加速，2．
We feel 小题4:__ sorry for the loss of lives. There is小题5:__ we can do to bring the students back, but we can try to prevent (防止) such things from 小题6:__ again. You should do the following things to prevent a stampede (踩踏)。 After class or school, don’t rush out at the same time. Wait until there are小题7:__ people trying to leave.When you walk with a crowd of people, stay alert (警惕的) and 小题8:your steps. Don’t play around. Be familiar with your 小题9:_ and learn where the safety exits are. When there’s pushing and squeezing (挤)，don’t move and try to hold on to something. 小题10:___ stay in a corner until the crowd leaves. |