
Newton's first law quiz3
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
yiqing lin
Used 6+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下所给的四种现象中,物体的运动状态没有发生改变的是
匀速转弯的汽车
平直铁轨上匀速前进的列车
正在荡秋千的小孩
守门员踢出去的足球
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
忽略空气阻力,抛出后的小球在空中运动轨迹如图所示,抛出后的小球由于
不受力,运动状态发生改变
不受力,运动状态不发生改变
只受到重力作用,运动状态发生改变
受到推力作用,运动状态发生改变
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一个物体受一对平衡力的作用,在光滑水平面上做匀速直线运动。如果它所受的这对平衡力突然消失则物体将
立即停止运动
运动速度越来越快
速度减慢,最后停止
仍做匀速直线运动
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果物体受到力的作用,可以断定下列情况中物体一定是受到非平衡力的作用是
物体在空中匀速直线下落
火车在平直铁轨上匀速前进
掷出的铅球在空中运动时
电梯匀速上升
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下面关于力和运动的说法中,正确的是
处于静止状态的物体,一定不受力的作用
物体受到平衡力的作用,一定做匀速直线运动
汽车加速时,受到的力一定不平衡
在做圆周运动的物体,可能不受力的作用
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