满分5 >
初中数学试题 >
汽车匀加速行驶路程为,匀减速行驶路程为,其中v、a为常数、一汽车经过启、匀加速行...
汽车匀加速行驶路程为
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/0.png)
,匀减速行驶路程为
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/1.png)
,其中v
、a为常数、一汽车经过启、匀加速行驶、匀速行驶、匀减速行驶之后停车,若把这一过程中汽车的行驶路程s看作时间t的函数,其图象可能是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/images2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/images3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/images4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892007_ST/images5.png)
考点分析:
相关试题推荐
抛物线C
1:y=x
2+1与抛物线C
2关于x轴对称,则抛物线C
2的解析式为( )
A.y=-x
2B.y=-x
2+1
C.y=x
2-1
D.y=-x
2-1
查看答案
若点B(a,0)在以点A(1,0)为圆心,以2为半径的圆内,则a的取值范围为( )
A.-1<a<3
B.a<3
C.a>-1
D.a>3或a<-1
查看答案
如图所示.△ABC内接于⊙O,若∠OAB=28°,则∠C的大小是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892004_ST/images0.png)
A.56°
B.62°
C.28°
D.32°
查看答案
下面四张扑克牌中,图案属于中心对称图形的是图中的( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892003_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892003_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000606535389267/SYS201311030006065353892003_ST/images2.png)
D.
查看答案
抛物线y=x
2-2x+3的对称轴是直线( )
A.x=-2
B.x=2
C.x=-1
D.x=1
查看答案