1.单选题- (共16题)
| A．速度大的物体加速度一定大 |
| B．速度的大小不变的物体加速度一定为零 |
| C．速度变化大的物体加速度一定大 |
| D．相等的时间内，加速度大的物体速度的变化一定大 |
| A．10m | B．20m | C．30m | D．40m |
①甲、乙同时开始运动
②甲、乙从同一地点开始运动
③前2s内乙的速度大于甲的速度，2s后乙的速度小于甲的速度
④在距出发点4m处，甲追上乙，两物体相遇
| A．①②③ | B．①④ | C．②③ | D．①③④ |
| A．30m | B．40m | C．50m | D．60m |
| A．物体对桌面的压力的大小等于物体的重力，这两个力是一对平衡力 |
| B．物体所受的重力与桌面对它的支持力是一对作用力与反作用力 |
| C．物体对桌面的压力就是物体的重力，这两个力是同一性质的力 |
| D．物体对桌面的压力和桌面对物体的支持力是一对作用力、反作用力 |
的斜面上，放一质量为
的小球，小球被竖直的木板挡住，不计摩擦，则小球对木板的压力是（）
的关系和物块速度
与时间的关系如图甲乙所示，取重力加速度g=10m/s2。由两图像可以求得物块的质量
和物块与地面之间的动摩擦因数
分别为（ ）
A． |
B． |
C． |
D． |
| A．0.1m/s2 | B．1m/s2 | C．3m/s2 | D．10m/s2 |
| A．速度越大的物体越难让它停止运动，故速度越大，惯性越大 |
| B．静止的物体惯性最大 |
| C．不受外力作用的物体才有惯性 |
| D．行驶车辆突然转弯时，乘客向外倾倒是由于惯性造成的 |
g，g为重力加速度．人对电梯底部的压力为（ ）
mg
| A．100N | B．400N | C．800N | D．1000N |
| A．一直增大 |
| B．一直减小 |
| C．先减小，后增大，再减小 |
| D．先增大，后减小，再增大 |
2.选择题- (共6题)
阅读理解
One day, Justin decided to spend the holiday with his old friend Andrew in Australia. Their plane arrived in Sydney at ten in the morning. They had a good rest in a hotel. The next morning they rented(租)a car and began their travel. Justin found a river and they drove the car there quickly. Soon they got to the river. Before they jumped into the water, Andrew saw a boy playing under a big tree. He asked, “Are there any crocodiles(鳄鱼)in the river? ”“No, there aren’t, ”answered the boy. So they began to swim in the river. After a while, Justin felt something hit against(撞击)his leg. He told Andrew about it. They were afraid and stopped swimming. Andrew asked the boy loudly, “Is it true that there aren’t any crocodiles in the river? ”
“Yes, sir, ”said the boy, “But there are many sharks(鲨鱼)in the river. ”
阅读理解
One day, Justin decided to spend the holiday with his old friend Andrew in Australia. Their plane arrived in Sydney at ten in the morning. They had a good rest in a hotel. The next morning they rented(租)a car and began their travel. Justin found a river and they drove the car there quickly. Soon they got to the river. Before they jumped into the water, Andrew saw a boy playing under a big tree. He asked, “Are there any crocodiles(鳄鱼)in the river? ”“No, there aren’t, ”answered the boy. So they began to swim in the river. After a while, Justin felt something hit against(撞击)his leg. He told Andrew about it. They were afraid and stopped swimming. Andrew asked the boy loudly, “Is it true that there aren’t any crocodiles in the river? ”
“Yes, sir, ”said the boy, “But there are many sharks(鲨鱼)in the river. ”
阅读理解
One day, Justin decided to spend the holiday with his old friend Andrew in Australia. Their plane arrived in Sydney at ten in the morning. They had a good rest in a hotel. The next morning they rented(租)a car and began their travel. Justin found a river and they drove the car there quickly. Soon they got to the river. Before they jumped into the water, Andrew saw a boy playing under a big tree. He asked, “Are there any crocodiles(鳄鱼)in the river? ”“No, there aren’t, ”answered the boy. So they began to swim in the river. After a while, Justin felt something hit against(撞击)his leg. He told Andrew about it. They were afraid and stopped swimming. Andrew asked the boy loudly, “Is it true that there aren’t any crocodiles in the river? ”
“Yes, sir, ”said the boy, “But there are many sharks(鲨鱼)in the river. ”
3.多选题- (共1题)
| A．2m/s2 | B．4m/s2 | C．6m/s2 | D．8m/s2 |
4.解答题- (共5题)
某同学是这样解的：要使摩托车所用时间最短，应先由静止加速到最大速度v1="40" m/s，然后再减速到v2="20" m/s，
…，
…；
．你认为这位同学的解法是否合理？若合理，请完成计算；若不合理，请说明理由，并用你自己的方法算出正确结果．
（1）物体在此2.0s内通过的位移
（2）物体与桌面间的动摩擦因素µ
(1)物体所滑动受摩擦力为多大？
(2)物体的加速度为多大？
(3)物体在第3s内的位移为多大？
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【1】题量占比
单选题:(16道)
选择题:(6道)
多选题:(1道)
解答题:(5道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：10
7星难题：0
8星难题：10
9星难题：2