在剛剛的賽跑中,誰的速度最快?

力與運動

Quiz
•
Physics
•
5th Grade
•
Medium
黃老師 黃老師
Used 3+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小新花了20秒鐘跑到終點
風間花了15秒鐘抵達終點
正男被起跑槍聲嚇到在起點大哭
阿呆待在起點安慰正男
Answer explanation
相同距離內,花費的時間愈短,速度愈快。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
妮妮想要把椅子推開,她發現當她施力到15公斤重時,椅子才開始移動,由此可知椅子的摩擦力可能是多大?
14公斤重
15公斤重
18公斤重
Answer explanation
施力要大於摩擦力,物體才會被移動。
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
影響物體摩擦力大小的因素有「哪些」?(複選題)
接觸面的面積大小
接觸面的材質
物體的顏色
物體的重量
接觸面的顏色
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我們「無法」測量哪一種力量的大小?
重力
人的拉力
風力
以上力量都可以被測量
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在彈簧上掛上砝碼,彈簧的長度會如何變化?
有規律地變短
有規律地變長
變長但無規律
變短但無規律
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
請問塗黑處的「彈簧總長度」應該是多少公分?
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
請問「彈簧原長度」應該是多少公分?
8.
FILL IN THE BLANK QUESTION
1 min • 1 pt
阿婕和阿羽在拔河,已知阿婕施的力氣是30公斤重,此時兩個人僵持不下,拔河繩一動也不動,由此可知阿羽的施力是多少公斤重?(答案不用寫單位)
Answer explanation
力平衡:大小相同,方向相反
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