
Ch11(11.5) 力和運動 L2
Quiz
•
Science
•
1st Grade
•
Practice Problem
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪項有關這兩道力的敍述是正確的?
(1) 這兩道力作用在不同的物體上。
(2) 若男子在斜路上推車子,這兩道力的大小便會有異。
(3) 這兩道力互相抵消。
A. 只有 (1)
B. 只有 (2)
C. 只有 (1) 和 (3)
D. 只有 (2) 和 (3)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪對力為作用力反作用力對?
(1) 航拍機的重量及空氣作用在航拍機的力
(2) 空氣作用在航拍機的力和航拍機作用在空氣的力
(3) 航拍機的重量及航拍機作用在地球的重力
A. 只有 (1) 和 (2)
B. 只有 (1) 和 (3)
C. 只有 (2) 和 (3)
D. (1)、(2) 和 (3)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. (延展)火箭正往上發射。以下哪項描述是正確的?P代表火箭的推進力、Q代表火箭的重量,而R代表作用在火箭的空氣阻力。
A. P < Q + R
B. P = Q + R
C. P > Q + R
D. P + R > Q
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. (延展)一名太空人在太空船中感受到微重力。這意味着
(1) 太空人能在太空船內隨意飄浮。
(2) 太空人感受不到從地球而來的重力。
(3) 作用在太空人的力平衡。
A. 只有 (1)
B. 只有 (2)
C. 只有 (1) 和 (3)
D. 只有 (2) 和 (3)
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
把答案填寫在橫線上。
1. 力必定成對出現。這一對力稱為 ____________________________。
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
把答案填寫在橫線上。
2. (延展)物體處於 __________________ 狀態時,看來好像無重。
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
把答案填寫在橫線上。
3. (延展)太空船的外殼以 __________________ 物料覆蓋,防止太空船燃燒。
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