
B5C1_直線運動A卷

Quiz
•
Physics
•
9th Grade
•
Hard
chungtsen chen
Used 24+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
汽車在公路上以 10 公尺/秒的速率直線前進,駕駛發現前方路口燈號轉為紅燈,經過 0.5 秒的反應時間後開始踩剎車,汽車車速(v)隨時間(t)變化關係如圖所示,下列敘述何者錯誤?
在 0.5 秒的反應時間內,車子前進了 5 公尺
從開始剎車到停止期間,車子的加速度為負值
從開始剎車後 1 秒鐘,車速為 5 公尺/秒
從燈號轉為紅燈起到汽車完全靜止,車子共行駛了 1.5 秒
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某汽車製造商宣稱他們所生產的汽車性能絕佳,可在 5 秒內速度由零加速至時速 90 km(90 km/hr),則此汽車的平均加速度為何?
25 m/s2
5 m/s2
300 m/s2
10 m/s2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲在直線跑道上運動,如圖是甲兩次運動過程中速度與時間(v-t)及位置與時間(x-t)的關係圖,試問甲在兩次運動過程中各折返幾次?
第一次折返 2 次,第二次折返 2 次
第一次折返 3 次,第二次折返 3 次
第一次折返 2 次,第二次折返 3 次
第一次折返 3 次,第二次折返 2 次
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
阿妮和阿雅一起打高爾夫球,兩人打球的運動軌跡如附圖所示,若兩人花相同的時間,將球打進洞裡,請問下列敘述何者正確?
兩球的位移相同
此過程中,兩球的速度和速率皆相同
由於時間相同,故兩者運動的路徑長必相等
此過程中,阿妮的球平均速率較大
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