
2025物理达人挑战赛
Authored by Alice Li
Physics
Professional Development

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
李卓站在电梯里,当电梯加速上升时,李卓对电梯地板的压力()
大于李卓的重力
小于李卓的重力
等于李卓的重力
为零
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
汽车刹车时,下列哪种情况刹车距离最短()
车速较慢,路面干燥
车速较快,路面干燥
车速较慢,路面湿滑
车速较快,路面湿滑
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种运动属于匀速直线运动()
地球绕太阳公转
火车在平直轨道上加速行驶
飞机在起飞前在跑道上匀速滑行
汽车在盘山公路上行驶
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
李卓用相同的力推一辆小车和一辆大卡车,小车比大卡车运动得更快,这是因为()
小车的惯性比大卡车小
小车的惯性比大卡车大
小车受到的摩擦力比大卡车小
小车受到的摩擦力比大卡车大
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种情况下,物体的机械能是守恒的()
物体在空中自由下落
物体在空中匀速上升
物体在水平地面上匀速运动
物体在斜面上匀速下滑
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
李卓在操场上做单杠练习,当他在单杠上静止不动时,下列说法正确的是()
单杠对李卓的拉力等于李卓的重力
单杠对李卓的拉力大于李卓的重力
单杠对李卓的拉力小于李卓的重力
无法判断单杠对李卓的拉力与李卓的重力的大小关系
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
李卓在玩悠悠球时,发现悠悠球在绳子的牵引下做圆周运动,这是因为()
悠悠球受到平衡力的作用
悠悠球受到非平衡力的作用
悠悠球的惯性在起作用
悠悠球不受力的作用
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