
Newton's first law quiz2
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
yiqing lin
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人类发射的探测器已飞出了太阳系,如果探测器所受外力全部消失,那么探测器将
沿原路径返回地球
沿原方向做减速直线运动
沿原方向做加速直线运动
沿原方向做匀速直线运动
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一物体静止在水平桌面上,当它受到的外力全部消失突然消失,则
仍保持静止
运动速度越来越快
运动速度越来越慢
做匀速直线运动
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
行驶的汽车在刹车后能静止,这是因为
汽车的惯性消失了
汽车的惯性小于汽车的阻力
阻力作用改变了汽车的运动状态
汽车受到平衡力的作用而静止
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
匀速上升的气球下面悬挂着一个小石块,当细线突然断了以后,石块的运动状态是
继续匀速上升
立即加速下降
匀速上升一段距离后加速下降
减速上升一段距离后加速下降
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如图所示,从水平匀速飞行的飞机上先后落下两颗炸弹,在不计空气阻力的条件下,能正确反映飞机和两颗炸弹运动情况的是
A
B
C
D
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如图,如果你在直线行驶的火车里做一小实验:让手中苹果自由下落那么苹果将会落在
A处
B处
C处
三种都可能
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列现象中不能用惯性知识解释的是
跳远运动员的助跑速度越大,跳远成绩往往越好
用力将物体抛出去,物体最终要落到地面上
子弹离开枪口后,仍能继续高速向前飞行
古代打仗时,使用绊马索能将敌方飞奔的马绊倒
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