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]
Figure 2–29 shows the velocity of a t9s/ctjyo m-4l t n,x7erairk) u ,f,cznqqvt-ytu)a) 1r1n as a function of time. (a) At what time was its velocity greatest? (b) During what periods, if any, was the velocity constant? (c) During , ,qv)q aun1fkt- rrct)zy)1uwhat periods, if any, was the acceleration constant? (d) When was the magnitude of the acceleration greatest?
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