College Physics

Figure 2.63

63.Construct the displacement graph for the subway shuttle train as

shown inFigure 2.48(a). You will need to use the information on

acceleration and velocity given in the examples for this figure.

64.(a) Take the slope of the curve inFigure 2.64to find the jogger’s

velocity att= 2.5 s. (b) Repeat at 7.5 s. These values must be

consistent with the graph inFigure 2.65.

Figure 2.64

Figure 2.65

Figure 2.66

65.A graph ofv(t)is shown for a world-class track sprinter in a 100-m

race. (SeeFigure 2.67). (a) What is his average velocity for the first 4 s?

(b) What is his instantaneous velocity att= 5 s? (c) What is his

average acceleration between 0 and 4 s? (d) What is his time for the

race?

Figure 2.67

66. Figure 2.68shows the displacement graph for a particle for 5 s. Draw
    the corresponding velocity and acceleration graphs.

Figure 2.68

84 CHAPTER 2 | KINEMATICS

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