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物理
國中一至三年級
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已顯示全部 4 道題目——免費註冊即可匯入這個題庫，和全班一起玩。
1
A car is at position +5 m from the origin. If the origin is moved 3 m to the right (positive direction), what is the car's new position?
A
-2 m
B
+8 m
C
+2 m
D
+5 m
2
Which of the following best explains why an object's coordinate value can change even though its actual location does not?
A
Because the object moves to a new location
B
Because the coordinate value depends on the chosen origin and positive direction
C
Because the coordinate system is always fixed
D
Because the unit of measurement changes
3
A cyclist starts at position -4 m and ends at position +6 m. What is the cyclist's displacement?
A
+2 m
B
-2 m
C
+10 m
D
-10 m
4
If a coordinate system has its origin at the left end of a track and the positive direction to the right, what is the position of an object 3 meters to the left of the origin?
A
+3 m
B
0 m
C
-3 m
D
3 m to the right