2. 1D Motion / Kinematics

(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) 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 at t = 10.0 s?

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 between t = 0 and t = 5.0 s?

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

In Fig. 2–40, at what time is the velocity greatest?

In Fig. 2–40, at what time, if any, is the velocity zero?

In Fig. 2–40, does the object move in one direction or in both directions during the time shown?

Figure 2–55 shows the position vs. time graph for two bicycles, A and B. Identify any instant at which the two bicycles have the same velocity.

Figure 2–55 shows the position vs. time graph for two bicycles, A and B. Which bicycle has the larger acceleration?

FIGURE EX1.18 shows the motion diagram of a drag racer. The camera took one frame every 2 s. Make a position-versus-time graph for the drag racer. Because you have data only at certain instants, your graph should consist of dots that are not connected together.

FIGURE EX2.4 is the position-versus-time graph of a bicycle. What is the bicycle's velocity at t = 5s

FIGURE EX2.4 is the position-versus-time graph of a bicycle. What is the bicycle's velocity at t = 30s?