Liz had been bleeding all day. She was my good friend and closest professional workmate at the time ---back in the 1970’s. It had been her first day back at work after an operation and I thought she 36 have taken a few more days to 37 . Realizing that we couldn’t stop the bleeding, she and I 38 to the emergency room and spent hours there waiting to be seen. After the treatment, I drove her to my apartment. Once I got her 39 , I had to leave her in my apartment 40 I rushed off to take a final exam for a very important evening class I was taking. Upon my 41 , Liz wa
甲、乙、丙三个物体做匀变速运动,通过A点时,物体甲的速度是6 m/s,加速度是1 m/s2;物体乙的速度是2 m/s,加速度是6 m/s2;物体丙的速度是-4 m/s,加速度是2 m/s2.则下列说法中正确的是
A.通过A点时,物体甲最快,乙最慢
B.通过A点前1 s时,物体丙最快,乙最慢
C.通过A点后1 s时,物体乙最快,丙最慢
D.以上说法都不正确