CH 5 机械能 测验
Authored by Ch'ng Thiam
Science
7th - 9th Grade
Used 45+ times
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10 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
请写出力的单位。
(a)
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
请写出功的单位。
(a)
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
请写出功率的单位。
(a)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
请分析以下物件A，
哪个具有最多的重力势能？
树上的物件A
车上的物件A
桌上的物件A
地上的物件A
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
箭从弓射出的能量来源是
_________。
重力势能
弹力势能
化学能
动能
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
以下哪项没有做功？
（多选项）
把杠铃举在空中达三秒
踢球使球飞出
停在路边的汽车
匀速驶动的火车
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
一颗苹果从树上掉下来，
不变的是__________。
重力势能
动能
机械能
弹力势能
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