
南一國中自然9上ch2-3
Authored by 南一 自然
Science
9th Grade
Used 18+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪些現象不是利用作用力與反作用力的原理
發射大砲時,砲身後退的現象
旋轉雨傘見到水滴沿切線方向飛出
賽跑選手以起跑架起跑,可增大起跑速度
划龍舟選手,用槳往後推水使船前進
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有一石頭重300牛頓,清文用手以350牛頓之力將石頭向上舉起,則石頭給手的反作用力為何?
650
50
300
350
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在帆船上擺放一個巨大的風扇,則要如何擺放,往何處吹,才可使帆船快速前進?
擺在船首,向船前進的方向
擺在船中間,向船後方吹
擺在船尾,向船後方吹
擺在面對船帆的方向,向船帆吹
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一隻老鷹抓到小雞之後,以9公尺/秒的水平等速度飛行,在空中時小雞突然掉落,則老鷹受地球吸引的反作用力為何?
空氣對老鷹的浮力
小雞對老鷹的引力
老鷹拍動翅膀的力
老鷹對地球的引力
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
清文、宏家的質量分別為70kg及60kg,兩人站在無摩擦的溜冰場地面上互推,試問清文與宏家兩人所受到的推力大小比為何?
7:6
6:7
1:1
49:36
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有A、B兩船漂浮於水面上,A船上的人以繩綁住B船並用力拉之,試問下列何者正確?
兩船皆不動
兩船皆互相靠近
B船不動,A船向其靠近
A船不動,B船向其靠近
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
太空中的太空梭能向前推進,主要是由於:
空氣的浮力
噴出的氣體施力於空氣,空氣給太空梭的反作用力
噴出的氣體給太空梭的反作用力,使太空梭前進
空氣的摩擦力
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