(II) In Fig. 2–40, (c) At what time, if any, is the velocity zero?
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(II) The position of an object along a straight tunnel as a function of time is plotted in Fig. 2–40. What is its instantaneous velocity

(a) at t = 10.0 s and

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(II) The position of an object along a straight tunnel as a function of time is plotted in Fig. 2–40. What is its average velocity

(c) between t = 0 and t = 5.0 s

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(II) In Fig. 2–40, (a) during what time intervals, if any, is the velocity constant?

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(II) In Fig. 2–40, (b) At what time is the velocity greatest?

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(II) In Fig. 2–40, (d) Does the object move in one direction or in both directions during the time shown?

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Figure 2–55 shows the position vs. time graph for two bicycles, A and B.

(a) Identify any instant at which the two bicycles have the same velocity.

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Figure 2–55 shows the position vs. time graph for two bicycles, A and B.

(b) Which bicycle has the larger acceleration?

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