物體受到與運動方向相同的作用力時,速度會變得更快。這種作用力是?

物理力學測驗

Passage
•
Physics
•
1st - 5th Grade
•
Hard

zay tsai
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
拉力
彈力
重力
摩擦力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當足球與地面接觸時,會產生一種阻力,使足球愈滾愈慢。這種阻力是?
拉力
摩擦力
彈力
重力
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物體在光滑的表面上會移動得比較遠,這是因為光滑的表面可以?
增加重力
減少重力
增加摩擦力
減少摩擦力
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
硬幣在卡紙上移動較快,這是因為卡紙的表面?
潤滑
粗糙
光滑
黏膩
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力來自於兩個物體接觸時的細微凹凸表面,是一種和物體運動方向相反的作用力。這種力是?
拉力
彈力
重力
摩擦力
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在物品表面增加摩擦力,可以讓我們更方便做事,或是讓行動更安全。下列哪個設計可以增加摩擦力?
高雄火車站遷移時裝上滾輪
門鉸鏈加上潤滑油
滑梯的表面光滑
載物的推車利用輪子的構造
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在相同的高度,大小不同的樹葉同時掉落時,哪一片會先落到地面上?
較小的樹葉
大小相同的樹葉同時落下
較大的樹葉
無法確定
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