物理
如題
Throughout a time interval,
while the speed of a particle increases as it moves along the x axis,
its velocity and acceleration might be:
(a)positive and negative,respectively
(b)negative and positive,respectively
(c)negative and negative,respectively
(d)positive and zero,respectively
(e)negative and zero,respectively.
請教各位大大們你們答案是
理由是為何
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推
11/26 17:48, , 1F
11/26 17:48, 1F
→
11/26 17:49, , 2F
11/26 17:49, 2F
→
11/26 17:49, , 3F
11/26 17:49, 3F
→
11/26 17:50, , 4F
11/26 17:50, 4F
→
11/26 17:51, , 5F
11/26 17:51, 5F
→
11/26 17:51, , 6F
11/26 17:51, 6F
→
11/26 17:52, , 7F
11/26 17:52, 7F
→
11/26 18:09, , 8F
11/26 18:09, 8F
噓
11/26 22:07, , 9F
11/26 22:07, 9F
噓
11/26 23:28, , 10F
11/26 23:28, 10F
推
11/27 16:00, , 11F
11/27 16:00, 11F
噓
11/27 17:26, , 12F
11/27 17:26, 12F