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

Newton's first law quiz2

Quiz
•
Physics
•
8th Grade
•
Hard

yiqing lin
Used 7+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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
8.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如图所示,木块放在表面光滑的小车上并随小车一起沿桌面向左做匀速直线运动。当小车遇障碍物而突然停止运动时,车上的木块将
立即停下来
立即向前倒下
立即向后倒下
仍继续向左作匀速直线运动
9.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如图所示,质量分别为们m1、m2的两个物体甲与乙放在表面光滑且足够长的木板上,随木板一起以水平向右的相同速度沿同一直线做匀速直线运动,当木板突然停止时,以下说法正确的是
若m1>m2,甲将与乙发生碰撞
若m1<m2,甲将与乙发生碰撞
只有当m1=m2,甲与乙才不会碰撞
无论甲与乙的质量关系如何,它们始终不会碰
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