A:It all depend
B:It doesn't matter
C:That is right
D:I'll follow you
甲物体以乙物体为参考系是静止的,甲物体以丙物体为参考系是运动的,那么,以乙物体为参考系,丙物体( )
如图,在平面直角坐标系中,已知抛物线y= 32 x2+bx+c与x轴交于A(﹣1,0),B(2,0)两点,与y轴交于点C.