一物体做匀减速直线运动，初速度为10m/s，加速度大小为1m/s2，则物

一物体做匀减速直线运动，初速度为10m/s，加速度大小为1m/s²，则物体在停止运动前ls内的平均速度为

A．5.5 m/s B．5 m/s C．l m/s 　　　 D．0.5 m/s

答案

解析:略

相关题目

下列关于保护和改善城市环境的正确措施是 A.为缓解城市交

下列关于保护和改善城市环境的正确措施是 A.为缓解城市交通拥挤状况，市区应多建高速公路和铁路 B.为方便工人上下班，工厂应多建在居民区及周围 C

已知函数f(x)＝，则不等式f(x)≥x2的解集是( ) A．[－1,1] �

已知函数f(x)＝，则不等式f(x)≥x2的解集是( ) A．[－1,1] B．[－2,2] C．[－2,1] D．[－1,2]

After moving to their new house, the Lees bought some ________ in the mall near

After moving to their new house, the Lees bought some ________ in the mall nearby. A) furniture B) chair C) table �

It is quite hot days. And today is __________ day. A. hot B.

It is quite hot days. And today is __________ day. A. hot B. hotter C. as hot as D. the hottest

某同学用氯酸钾和二氧化锰的混合物加热制取氧气时发生了

某同学用氯酸钾和二氧化锰的混合物加热制取氧气时发生了爆炸，分析其可能的原因是（） A.管受热不均匀 B.气体发生装置

Have you ever had the strange feeling that you were being watched? You turned ar

Have you ever had the strange feeling that you were being watched? You turned around and, sure enough, someone was looking right at you!Some parapsychologists （心理学家） say that humans have a

下列式子中是一元二次方程的是( ) A．xy+2=1 B．（x2

下列式子中是一元二次方程的是( ) A．xy+2=1 B．（x2+5）x=0 C．x2﹣4x﹣5 D．x2=0

下列细胞中物质运输的途径，可能存在的是 A.内环境中葡萄

下列细胞中物质运输的途径，可能存在的是 A.内环境中葡萄糖：细胞膜→细胞溶胶→线粒体 B.DNA：细胞核→核孔→细胞质 C.胰岛素：核糖体→内质网→

一物体做匀减速直线运动，初速度为10m/s，加速度大小为1m/s2，则物

答案

相关题目

最新题目