3-1功與功率-2

3-1功與功率-2

9th Grade

10 Qs

quiz-placeholder

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3-1功與功率-2

3-1功與功率-2

Assessment

Quiz

Physics

9th Grade

Practice Problem

Medium

Created by

夏志鍊 夏

Used 11+ times

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10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

選正確的?

(複選三個)

力與位移同向作正功

力與位移同向作負功

力與位移反向作負功

力與位移反向作正功

力與位移垂直不作功

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

推著1公斤的椅子水平了走10公尺

重力對椅子做了多少功?

0焦耳

10焦耳

98焦耳

3.

MULTIPLE SELECT QUESTION

0 sec • 1 pt

100牛頓的力推動5公斤的桌子

桌子等速度向前移動了2公尺

100牛頓的力作功=

0焦耳

40焦耳

10焦耳

200焦耳

4.

MULTIPLE SELECT QUESTION

0 sec • 1 pt

100牛頓的力推動5公斤的桌子

桌子等速度向前移動了2公尺

合力作功=

0焦耳

40焦耳

10焦耳

200焦耳

5.

MULTIPLE SELECT QUESTION

0 sec • 1 pt

100牛頓的力推動5公斤的桌子

桌子等速度向前移動了2公尺

摩擦力大小=

−50牛頓

−100牛頓

−20牛頓

6.

MULTIPLE SELECT QUESTION

0 sec • 1 pt

100牛頓的力推動5公斤的桌子

桌子等速度向前移動了2公尺

摩擦力作功=

0焦耳

-40焦耳

-10焦耳

-200焦耳

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

功的單位

(複選二個)

J

W

N⋅m

J/s

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