本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学
[问答题]
Describe in words the motion plotted in Fig. csj jvq1ff6 p9k*2wwa :hyr-/2–28 in fkm77 hrtirso4 tt i+bqs;;6 9terms of v, a, etc. [Hint: First try to duplicate t b otsht;9f rr7tk +sq 6m4i;7ihe motion plotted by walking or moving your hand.]
参考答案:
The
object starts with a constant velocity in the positive direction. At about t = 17 s, when the object is at the 5
meter position, it begins to gain speed – it has a positive acceleration. At about t
= 27 s, when the object is at about the 12 m position, it begins to slow down –
it has a negative acceleration. The
object instantaneously stops at about t
= 37 s, reaching its maximum distance from the origin of 20 m. The object then reverses direction, gaining
speed while moving backwards. At about t = 47 s, when the object is again at
about the 12 m position, the object starts to slow down, and appears to stop at
t = 50 s, 10 m from the starting
point.
本题详细解析:
暂无
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